Quick verdict
Peak season: Jan–Feb, Nov–Dec. Shoulder: Mar, Oct. Low: Apr–Sep.
Phnom Penh has a tropical monsoon climate with two distinct seasons.
What's the weather like in Phnom Penh by month?
Each month classified as peak (best balance of weather and value), shoulder (a step in either direction), or low season.
Why visit Phnom Penh during Jan–Feb, Nov–Dec?
The most comfortable time to visit with lower humidity and pleasant evenings. December and January are the "coolest" months, though still warm by Western standards.
Shoulder season (Mar, Oct) trades a small weather concession for noticeably smaller crowds and softer prices — often the sweet spot for travelers who want flexibility.
Low season (Apr–Sep) is when prices fall hardest. Expect weather extremes (heat, humidity, cold, or rain depending on the destination) and reduced hours at some seasonal businesses, but the trade-off can be worth it if budget or solitude matters more than perfect conditions.
What festivals and events happen in Phnom Penh?
- Water Festival (Bon Om Touk)November (full moon)
Three-day celebration of the Tonle Sap River reversal featuring boat races, fireworks, and illuminated floats. Millions attend from across Cambodia.
- Khmer New Year (Choul Chnam Thmey)April 13-16
The most important Cambodian holiday. Temples are packed, families gather, and water throwing fills the streets. Many businesses close for 3-5 days.
- Pchum Ben (Ancestors' Day)September/October
A 15-day Buddhist festival honoring deceased relatives. Cambodians visit pagodas to make offerings. A culturally significant but solemn period.
- Royal Ploughing CeremonyMay
An ancient Brahmanist ceremony held near the Royal Palace where sacred oxen predict the coming harvest. One of the most unique royal traditions in Southeast Asia.
What months should I avoid in Phnom Penh?
Avoid Jul–Aug if comfort is your priority — this is when weather extremes peak. That said, prices are also at their lowest, and crowds are thin, so the off-peak window suits travelers who put budget or atmosphere ahead of perfect conditions.
Cooler & warmer in Asia this November
If Phnom Penh's November weather isn't your match, here are the closest Asia alternatives at different temperatures. Distances are from Phnom Penh.
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See the full ranked list: All Asia destinations in November →
Frequently asked
When is the best time to visit Phnom Penh?
The best time to visit Phnom Penh is Jan–Feb, Nov–Dec. Phnom Penh has a tropical monsoon climate with two distinct seasons. These months balance comfortable weather, manageable crowds, and prices that haven't yet hit peak-season highs.
When is the cheapest time to visit Phnom Penh?
Low-season months in Phnom Penh run Apr–Sep. Flights and hotels typically run 20-40% cheaper than peak. The trade-off is weather (which is why these months are off-peak) and some businesses operating shorter hours, especially in smaller seasonal destinations.
What's the weather like in Phnom Penh year-round?
Summer averages around 33°C (91°F) and winter averages around 26°C (79°F) in Phnom Penh. Phnom Penh has a tropical monsoon climate with two distinct seasons. It is hot year-round, with the wet season bringing daily afternoon downpours from May to October and the dry season offering lower humidity from November to April. Temperatures rarely drop below 25°C.
What months should I avoid in Phnom Penh?
Jun–Aug brings peak heat (often above 32°C / 90°F) and humidity. If you must travel during these months, plan indoor activities for midday and shift sightseeing to early morning or evening.
What festivals or events are happening in Phnom Penh?
Notable events in Phnom Penh: Water Festival (Bon Om Touk) (November (full moon)); Khmer New Year (Choul Chnam Thmey) (April 13-16); Pchum Ben (Ancestors' Day) (September/October). Three-day celebration of the Tonle Sap River reversal featuring boat races, fireworks, and illuminated floats. Millions attend from across Cambodia.
How many days do I need in Phnom Penh?
Most travelers spend 3-5 days in Phnom Penh, which covers the main neighborhoods, top attractions, and a half-day day trip. Add a day if you're visiting during peak season when crowds slow you down, or if you're combining Phnom Penh with nearby destinations.
More peak-season picks for Phnom Penh's best months
See every destination at its peak in each of Phnom Penh's best months.
Full guide
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