by CJ on Unsplash

When to visit Phnom Penh? City-Trip Guide

Between the bright dry season and the enveloping monsoon, Phnom Penh reinvents itself through the seasons for a unique experience.

2.3 M population
Khmer language
110 days rainy days/year
November to February best time to visit
3 to 5 days recommended stay

Climate of Phnom Penh

Understanding the tropical climate of Phnom Penh

Spectacular sunset illuminating the horizon of the large city of Phnom Penh at the end of the day.

by Sidara Keo on Unsplash

Phnom Penh enjoys a tropical monsoon climate, characterized by a dry season (November–April) and a rainy season (May–October). Located at the confluence of the Mekong and Tonlé Sap rivers, the Cambodian capital is influenced by these waterways on its microclimate. The urban heat island effect intensifies temperatures, which can exceed 38°C / 100.4°F in April.

Month	Min Temp (°C / °F)	Max Temp (°C / °F)	Precipitation (mm)	Sunshine (h/day)	Tourist Traffic	Recommended Activities
January	22°C / 72°F	31°C / 88°F	8	8	★★★★★	Royal Palace, Riverside, markets
February	23°C / 73°F	33°C / 91°F	11	9	★★★★★	Historical sites, night walks
March	25°C / 77°F	36°C / 97°F	42	8	★★★★	Museums, Mekong sunset
April	26°C / 79°F	38°C / 100°F	86	7	★★★	Khmer New Year, festive atmosphere
May	25°C / 77°F	35°C / 95°F	134	6	★★	Air-conditioned museums, local cuisine
June	24°C / 75°F	33°C / 91°F	145	5	★★	Covered markets, Tuol Sleng
July	24°C / 75°F	32°C / 90°F	170	5	★★	Culture, spas, Khmer cuisine
August	24°C / 75°F	32°C / 90°F	165	5	★★	Museums, craft workshops
September	24°C / 75°F	31°C / 88°F	230	4	★★	Phsar Thmei, trendy BKK1 cafes
October	23°C / 73°F	31°C / 88°F	200	5	★★★	Pchum Ben, Water Festival
November	22°C / 72°F	31°C / 88°F	75	7	★★★★★	Bon Om Touk, Riverside, Killing Fields
December	21°C / 70°F	30°C / 86°F	30	8	★★★★★	Urban walks, markets, Royal Palace

The Seasons

🌤️ Cool and dry season (November – February)

The ideal period par excellence. The air is less heavy, temperatures are mild, and the sky is a deep blue. The streets of Phnom Penh come alive as soon as the sun sets: the Riverside teems with strollers, outdoor restaurants are full, and tuk-tuks roam the city until dawn. This is the season when the Cambodian capital shows its best side, welcoming and bright.

Temperatures: 21–33°C / 70–91°F

Precipitation: low, 8 to 75 mm

✅ Ideal for exploring historical sites on foot
✅ Mild nights conducive to evening walks
✅ Water Festival (Bon Om Touk) in November
✅ Clear sky, perfect for photography
✅ Great diversity of markets and cultural events

❌ High season: accommodation is more expensive and in higher demand
❌ Tourist sites sometimes crowded in December-January

Ideal for: first trips, couples, families, culture and history enthusiasts.

City atmosphere: Phnom Penh breathes serenity in the morning and ignites in the evening, between the soft lights of the Riverside and the aromas of street food.

☀️ Hot and dry season (March – April)

The heat becomes oppressive, with peaks of 38°C / 100°F in April. However, the approach of the Khmer New Year in mid-April transforms the city into a true national festival scene. The streets are covered in decorations, traditional games are organized in the pagodas, and families converge on the capital. For well-equipped travelers, this period offers a rare cultural immersion.

Temperatures: 25–38°C / 77–100°F

Precipitation: moderate at the end of the period, 42 to 86 mm

✅ Unique festive atmosphere around Khmer New Year
✅ Rates still affordable before the summer surge
✅ Fewer tourists than in high season

❌ Intense heat, particularly grueling outdoors
❌ Increasing humidity from late March
❌ Sites are very hot in the middle of the day

Ideal for: travelers curious about Khmer traditions, tight budgets, festival enthusiasts.

City atmosphere: Phnom Penh vibrates with a festive and popular energy, between street celebrations and family excitement around the pagodas.

🌧️ Early monsoon (May – July)

The first tropical rains appear, often in the form of brief but intense showers in the late afternoon. The city regains a relative freshness after the heat of April. Tourists are fewer, which allows for a more authentic immersion. The cafes on Street 240 and the bars in BKK1 become appreciated refuges. Local life resumes its rights with an endearing spontaneity.

Temperatures: 24–35°C / 75–95°F

Precipitation: high, 134 to 170 mm

✅ Less touristy city, more authentic experience
✅ Attractive accommodation prices
✅ Lush greenery, unique atmosphere
✅ Excellent local gastronomy accessible without reservation

❌ Unpredictable daily showers
❌ Some outdoor sites are difficult to visit

Ideal for: experienced travelers, small budgets, those curious about local life.

City atmosphere: Phnom Penh reveals itself in its truest daily life, between regenerating rains, lively markets, and the spontaneous smiles of the inhabitants.

⛈️ Full monsoon (August – October)

This is the wettest period of the year. The Mekong and Tonlé Sap swell impressively, and some low-lying areas of the city can be affected by slight occasional flooding. In October, the Pchum Ben festival leaves its mark. Then the Water Festival (Bon Om Touk) in November announces the end of the season and draws thousands of Cambodians to the capital for spectacular regattas.

Temperatures: 23–32°C / 73–90°F

Precipitation: very high, 165 to 230 mm

✅ Pchum Ben Festival, deep cultural experience
✅ Accommodation at the best prices of the year
✅ Almost no tourist crowds

❌ Very frequent and sometimes torrential rain
❌ Risk of occasional flooding in some neighborhoods
❌ Grueling humid heat

Ideal for: travelers in search of absolute authenticity, photographers, ultra-tight budgets.

City atmosphere: A peaceful and misty Phnom Penh, where local life flows peacefully between two showers and Buddhist rituals.

Must-sees by Weather

Whether the sun is shining or the rain is falling, Phnom Penh is full of experiences within reach. Organize your visits according to the current weather to take full advantage of each site, avoiding the hottest hours or monsoon showers.

Illuminated night panorama of the city and the Royal Palace seen from the opposite bank of the river.

by SAM sokkolinmony on Unsplash

☔ In cloudy/rainy weather

Indoor & protected

In case of rain, Phnom Penh offers an exceptional museum and memorial heritage, ideal for taking shelter while living an intense and unforgettable cultural experience.

🏛️ National Museum of Cambodia – masterpiece of Khmer architecture housing the largest collection of Khmer art in the world. Duration: 1h30. Price: ~3 USD. Open all year.
🔒 Tuol Sleng Prison (S-21) – former high school transformed into a detention center under the Khmer Rouge. Essential memorial site. Duration: 2h. Price: ~3 USD.
🛍️ Phsar Thmei (Central Market) – 1930s Art Deco dome housing crafts, jewelry, spices. Duration: 1h. Free entry.
🍜 Russian Market (Phsar Tuol Tom Pong) – covered, lively, ideal for souvenirs and street food. Duration: 1h. Free entry.
🧘 Traditional Khmer massage centers – perfect for waiting out a downpour. Many addresses around BKK1. Price: 6–15 USD/h.
🎨 Bophana Audiovisual Resource Center – film and photographic archives of Cambodian history. Free entry.

Practical tip: Book your S-21 entry online to avoid queues, especially from November to February.

Tip: Combine Tuol Sleng in the morning with the Killing Fields of Choeung Ek in the afternoon if the rain has subsided — shuttle available on site.

☀️ In good weather

Optimal outdoor

When the sky is clear, Phnom Penh unfolds all its magic along the Mekong and in its heritage districts. Take advantage of the early morning hours to avoid the heat of the day and get the best photo lighting.

👑 Royal Palace & Silver Pagoda – architectural jewel of the city. Duration: 2h. Price: ~6 USD. Best time: 8:00 AM–10:00 AM.
🌅 Riverside Promenade (Sisowath Quay) – lively riverfront, ideal at sunset. Duration: flexible. Free entry.
💀 Killing Fields of Choeung Ek – open-air memorial 15 km / 9 miles from the center. Duration: 2h. Price: ~6 USD. Best time: 9:00 AM–11:00 AM.
🕌 Wat Phnom – iconic hill-pagoda, the highest point in the city. Duration: 45 min. Price: ~1 USD.
🚤 Sunset cruise on the Mekong – spectacular views of the river confluence. Duration: 1h30. Price: 10–20 USD.

Best time of day: Sunrise on the Riverside for golden shots without the crowds, and golden hour from your hotel rooftop to capture the skyline.

Seasonal tip: From November to February, the weather is ideal all day. In March-April, avoid outdoor visits between 11:00 AM and 4:00 PM.

🌤️ Versatile for all weather

Flexible

Some places combine covered and outdoor spaces, allowing you to adapt your visit in real-time according to the whims of the sky.

🏘️ BKK1 District (Boeng Keng Kang 1) – trendy alleys, covered terrace cafes, art galleries, restaurants. Perfect in all weather.
🛕 Wat Langka – quiet pagoda with gardens. Easy shelter in case of light rain. Free entry.
🍽️ Street food around Phsar O'Russei – semi-covered market, abundant street food, permanent local activity.

Weather tip: Start with outdoor sites early in the morning, take refuge in a BKK1 cafe at lunchtime, then finish with a museum if a shower occurs in the early afternoon.

Example itinerary: 7:00 AM Riverside → 9:00 AM Royal Palace → 12:00 PM BKK1 cafe → 2:00 PM National Museum → 5:00 PM Mekong sunset cruise.

💰 Free or economical

Budget-friendly

Phnom Penh is one of the most affordable Asian capitals for budget travelers. Many of its attractions are accessible for free or at a very low cost.

🌿 Riverside Promenade (Sisowath Quay) – free access, permanent activity, grand sunsets. Free entry.
🕌 Wat Phnom – free access to the hill, pagoda entry ~1 USD only.
🏞️ Royal Palace Gardens (exterior) – public gardens along the Palace are free to access.
🎭 Bophana Center – screenings, photo exhibitions, archives. Free entry.

Free days: Some cultural spaces open their doors for free during Cambodian national holidays.

Budget tips: Views of the Mekong from the Riverside are entirely free. The Russian Market offers local meals for less than 1 USD. Opt for guesthouses outside the Riverside to halve your accommodation budget.

Practical Guide

Visiting Phnom Penh requires preparation adapted to the tropical climate: intense heat, sudden downpours during the monsoon, and ambient humidity can be surprising. Plan your days according to the temperatures and anticipate essential equipment to enjoy each neighborhood, whether on foot or by tuk-tuk.

Daily life scene showing locals riding motorcycles in the busy streets of Phnom Penh.

by Phanoth DYNA on Unsplash

👕 Seasonal packing

Cool and dry season (Nov–Feb): light cotton or linen clothing • light scarf for museums and pagodas (decent attire is mandatory) • comfortable closed shoes for historical sites • SPF 50 sunscreen • sunglasses

Hot season (Mar–Apr): ultra-light and breathable clothing • hat or cap is essential • pocket fan • reusable water bottle • open walking shoes

Monsoon (May–Oct): compact poncho or light raincoat • waterproof shoes or closed sandals • waterproof bag for electronic devices • quick-drying clothing • compact umbrella

💰 Seasonal budget

Period	City Center Hotel (€/night)	Transport (€/day)	Restaurants (€/day)	Attractions (€)	Traffic
Nov–Feb (High Season)	35–90	8–12	15–30	10–15	★★★★★
March (Intermediate)	30–70	8–10	12–25	10–15	★★★★
April (Khmer New Year)	35–80	10–15	15–30	10–15	★★★
May–Jul (Early Monsoon)	20–50	6–10	10–20	10–15	★★
Aug–Oct (Full Monsoon)	15–40	6–8	8–18	10–15	★★

💡 Money-saving tips

💡 Shared tuk-tuk or Grab Pass: the Grab app allows you to negotiate fixed prices and avoid tourist overcharges.
💡 Lunch in local restaurants: a bowl of noodles or fried rice costs less than 2 USD in places frequented by locals, compared to 8–15 USD in Riverside restaurants.
💡 Accommodation outside the Riverside: guesthouses in BKK1 or around Phsar O'Russei offer excellent value for money at 15–40 EUR/night.
💡 Tuol Sleng + Choeung Ek combo: the shuttle combining both memorial sites is cheaper than a round-trip tuk-tuk.
💡 Avoid dollars at tourist rates: use Cambodian Riels for market purchases and don't hesitate to negotiate.

🏥 Health and precautions

🌡️ Hydration: drink at least 2–3 liters of water per day, especially in the hot season (March–April).
🦟 Mosquito protection: essential at dawn and dusk, especially in the monsoon; dengue risk is present.
🍽️ Food safety: prefer places frequented by locals and avoid ice in street drinks.
☀️ Heatstroke: avoid intense physical activity between 11:00 AM and 4:00 PM from April to September.
💊 Pharmacies: many pharmacies open early until 8:00 PM in central districts; antibiotics are available without a prescription but use with discretion.
🦺 Intensive walking: closed shoes are recommended for memorial sites (uneven ground) and sun protection is mandatory outdoors.

Urban Events

Calendar of must-see events in Phnom Penh

Khmer festivals punctuate life in Phnom Penh with rare intensity. Certain events radically transform the city and should guide your choice of travel dates.

Buddhist monk wearing a traditional red robe holding an umbrella under the Cambodian sun.

by Norbert Braun on Unsplash

🎆 Bon Om Touk – Water Festival (October/November)

The Water Festival is arguably the most spectacular event of the year in Phnom Penh. Hundreds of flower-adorned boats race on the Tonlé Sap during illuminated night regattas, while millions of Cambodians flock to the capital. The atmosphere is indescribable: fireworks, live music, and jubilant crowds along the Riverside.

Location: Riverside (Sisowath Quay), Mekong-Tonlé Sap confluence

Special feature: A unique natural phenomenon where the Tonlé Sap reverses its flow, celebrated for over 900 years.

Climate impact: End of the monsoon, temperatures becoming pleasant. Influx of 2 to 3 million visitors in 3 days; hotels fully booked 2–3 weeks in advance.

Transport access: Walking distance from the city center. Avoid tuk-tuks during the festival (extreme traffic jams).

Planning tip: Book your accommodation 1 to 2 months in advance, ideally with a view of the Riverside.

🌸 Khmer New Year – Choul Chnam Thmey (April 13–15)

The Khmer New Year marks the end of the dry season and features three days of intense festivities. Phnom Penh is decorated with garlands, pagodas host traditional games (Angkunh, Chhoung), and purification ceremonies are held across the country. It is a time for deep family sharing, best experienced in residential neighborhoods rather than tourist zones.

Location: Wat Phnom, local pagodas, Riverside, residential districts

Special feature: Many shops are closed for 3 days; streets empty out, then explode with life in the evening.

Climate impact: Intense heat (36–38°C / 97–100°F); plan for morning schedules and air-conditioned breaks in the afternoon.

Transport access: Tuk-tuk or Grab; buses are crowded during the festival.

Planning tip: Book popular restaurants in advance; some hotels offer special Khmer New Year packages.

🙏 Pchum Ben – Ancestors' Day (September/October)

Pchum Ben is one of the most sacred religious festivals in the Cambodian Buddhist calendar. For 15 days, Cambodians honor their ancestors by bringing offerings to pagodas at dawn. This period offers a deeply authentic glimpse into Khmer spirituality, but also implies the closure of many shops and the near-desertion of the city by residents returning to their provinces.

Location: All pagodas in Phnom Penh, notably Wat Langka and Wat Ounalom.

Special feature: Unique contemplative atmosphere; ideal for spiritual immersion.

Climate impact: During the monsoon; bring a raincoat and quick-drying clothing.

Transport access: Tuk-tuks are easily available, as the city is less crowded with locals.

Planning tip: Accommodation is less in demand: a good time to negotiate attractive rates.

Seasonal events

Cool and dry season (Nov–Feb):

🎆 Bon Om Touk / Water Festival (Oct–Nov) – Riverside, regattas and fireworks
🎉 Cambodia Independence Day (Nov 9) – Riverside, official ceremonies and illuminations
🎄 Expat Christmas Market (Dec) – BKK1 district, crafts and international food
🥂 New Year's Eve (Dec 31) – parties at the Riverside and luxury hotels

Hot season (Mar–Apr):

🌸 Khmer New Year / Choul Chnam Thmey (Apr 13–15) – pagodas and festive streets throughout the city
🎭 Local cultural festivals in art centers (Mar)

Monsoon (May–Oct):

🙏 Pchum Ben – Ancestors' Day (Sep–Oct) – all pagodas
💧 Start of the Mekong flood (Jun) – natural spectacle from the Riverside
🎪 Cambodian Film Festival (Aug, dates vary) – cultural centers

Responsible City Trip

Traveling to Phnom Penh responsibly means choosing the right time to spread out the tourist impact, supporting local actors, and preserving the residential neighborhoods that constitute the true face of the Cambodian capital.

People cycling on a tree-lined road promoting soft mobility in Cambodia.

by Pj Go on Unsplash

Phnom Penh is a city in full urban transformation, where mass tourism can weaken certain heritage neighborhoods. Favor guesthouses run by Cambodian families, consume in local markets rather than Western supermarkets, and respect dress codes in pagodas. Soft mobility (walking, cycling) remains the best way to discover the city while reducing your carbon footprint.

🌱 Low-season advantages

Visiting Phnom Penh during the rainy season (May–October) helps reduce tourist pressure, benefit from attractive prices, and live a more authentic experience in contact with a city that has not yet adjusted all its infrastructure to the flows of international tourism.

♻️ Sustainable travel tips

🚶 Prioritize walking in the central districts (BKK1, Riverside) to limit emissions and better feel the local atmosphere.
🛺 Choose electric tuk-tuks, which are developing in Phnom Penh, rather than thermal motorcycle taxis.
🍽️ Eat local: restaurants run by Khmer families offer authentic dishes at a lower cost and participate directly in the local economy.
🏨 Certified accommodation: favor guesthouses and hotels showing environmental commitments (waste collection, plastic reduction).
♻️ Refuse single-use plastic: bring a reusable water bottle and a fabric bag for the market.
📸 Respect memorial sites: adopt a sober and respectful attitude at the Killing Fields and S-21 sites; avoid inappropriate selfies.

🏙️ Local sustainable initiatives

The city is gradually developing pedestrian zones on weekends around the Riverside and Wat Phnom. Local associations offer guided bike tours in authentic neighborhoods. The BKK1 organic market promotes local producers. Plastic waste collection initiatives in the Mekong are led by Cambodian NGOs supported by responsible tourism.

Our Recommendations

Recommendations for your city trip to Phnom Penh

Fascinating architectural detail of a white concrete building adorned with typical Khmer golden decorations.

by Daniel Bernard on Unsplash

After a complete climate analysis, November and December stand out as the preferred months to visit Phnom Penh. The heat is bearable, the sky is clear, accommodation is available (before the January influx), and the Water Festival transforms the city into a living spectacle. For flexible travelers, January and February also offer ideal conditions. If you are looking for authenticity at a low price, dare to visit during the monsoon from May to July: you will discover a relaxed, welcoming, and truly Cambodian city.

⭐ Optimal period: November – February

Recommended months: November, December, January, February

✅ Pleasant temperatures: 21–33°C / 70–91°F, without excessive heat or rain
✅ Water Festival (Bon Om Touk) in November: unique spectacle not to be missed
✅ Blue sky and optimal sunshine for outdoor visits
✅ Lively nightlife on the Riverside, festive markets in December
✅ Perfect for memorial sites (Killing Fields, S-21) without weather constraints

Key events: Bon Om Touk (Nov), Independence Day (Nov 9), Expat Christmas (Dec), International New Year (Dec 31)

Disadvantages: High season — accommodation is more expensive and booking is essential 3 to 6 weeks in advance in December-January.

Ideal profile: First-time visitors, couples, families, history and culture enthusiasts.

Recommended stay duration: 4 to 5 days

🌤️ Interesting alternative: March – early April

Alternative months: March, early April

The heat rises but remains manageable in the early morning. There are fewer tourists than in the peak high season, and accommodation prices are 20 to 30% lower. The pre-Khmer New Year period brings a progressive festive dynamic to the streets and pagodas.

✅ Fewer crowds at major tourist sites
✅ Attractive prices (accommodation, restaurants)
✅ Atmosphere preceding the Khmer New Year, culturally rich

For whom: Experienced travelers, Khmer culture enthusiasts, mid-range budgets, photographers in search of intense light.

👥 Tips for your travel style

Family: November–January • Royal Palace, Riverside, river cruise • family accommodation in BKK1 • private tuk-tuk for travel with children • avoid the April heatwave.

Budget: May–July • guesthouses from 15 EUR/night • street food at O'Russei market • Grab for transport • affordable memorial sites (3 USD).

Culture: November (Bon Om Touk) or April (Khmer New Year) • National Museum, S-21, Choeung Ek, Bophana Center • BKK1 district for art galleries • independent local guides recommended.

Romantic: December–January • sunset cruise on the Mekong • rooftop dinner with river view • boutique hotels on the Riverside • cozy atmosphere of the cafes on Street 240.

Weekend: November–February • 3 nights are enough for the essentials • program: Royal Palace + Riverside + S-21 + market • direct flight or short layover via Bangkok or Ho Chi Minh.

First trip: December–January • city center hotel (Riverside or BKK1) • guided tour in English recommended for S-21 and Choeung Ek • Grab app is essential • adapt visits to the daytime heat.

⛔ Periods to avoid: August – September

Months not recommended: August, September

Reasons: Maximum precipitation (165–230 mm/month), persistent humid heat, risk of water runoff in some low-lying areas, outdoor sites are difficult to visit. Several attractions partially close or reduce their hours.

Nuances: These months are suitable for seasoned travelers wanting total immersion in local life, photographers drawn to the misty and dramatic atmosphere of the flooding Mekong, and those on a very tight budget.

Frequently Asked Questions

Here are the answers to the most frequently asked questions to prepare for your city trip to Phnom Penh according to your profile, budget, and the season.

What is the best month to visit Phnom Penh?

November and December are the most recommended months to visit Phnom Penh. Temperatures range between 21°C / 70°F and 31°C / 88°F, the sky is clear, and sunshine is generous. Early November also coincides with the spectacular Water Festival (Bon Om Touk), which transforms the Riverside into an unforgettable national celebration. January and February are also excellent options, with constant blue skies and ideal conditions for outdoor visits. If you want to avoid the high season and its high prices, March remains a good compromise before the arrival of intense heat.

How many days should I plan for Phnom Penh?

A minimum of 3 days is necessary to see the highlights: Royal Palace, National Museum, S-21 memorial sites and the Killing Fields, and the Riverside promenade. 4 to 5 days allow time to explore the markets, take a Mekong cruise, stroll through BKK1, and discover local gastronomy. If you wish to combine Phnom Penh with Siem Reap and Angkor, plan for 7 to 10 days in total for Cambodia. The city is easily explored on foot or by tuk-tuk, which significantly optimizes travel time.

What to do in Phnom Penh when it rains?

Phnom Penh offers many very enriching indoor alternatives. The National Museum of Cambodia is worth a two-hour visit alone with its exceptional collection of Khmer art. The Tuol Sleng Prison (S-21) is an essential memorial site, entirely covered. The Phsar Thmei (Central Market), with its Art Deco dome, invites you to browse between crafts and spices. Traditional Khmer massage spas around BKK1 are perfect for waiting out a downpour. Finally, the trendy cafes and restaurants on Street 240 or in BKK1 are pleasant refuges to read, work, or simply observe the city in the rain.

Which events should not be missed in Phnom Penh?

Three events are worth planning your trip around. The Water Festival Bon Om Touk (October/November) is absolutely unique: illuminated night regattas, millions of spectators on the Riverside, and grand fireworks. The Khmer New Year (April 13–15) offers an immersion into Khmer culture with traditional games and pagoda ceremonies. Finally, Pchum Ben (September/October) is the most sacred Buddhist festival of the year, offering an authentic spiritual experience in the pagodas. Independence Day (November 9) also features beautiful illuminations on the Riverside.

What budget should I plan according to the season?

Phnom Penh remains one of the most affordable capitals in Southeast Asia. In high season (November–February), expect 60 to 120 EUR/day for a solo traveler in mid-range accommodation (40–80 EUR/night), Grab transport, and local restaurants. In the rainy season (May–October), the same comfort costs 35 to 70 EUR/day due to lower hotel rates. Budget travelers can get by with 20 to 35 EUR/day by choosing guesthouses (15–25 EUR/night) and eating exclusively in local markets (1–3 USD per meal). Major attractions remain modest: 3 to 6 USD per site.