Phnom Penh Weather History
Cambodia · Asia · Weather data 1976–today
Phnom Penh sits 1286km from the equator, 15m above sea level. That combination gives it a hot climate with one clear dry season (Tropical savanna climate). Its record high is 39.3°C, set 1998-04-14, its record low 15.0°C, set 1999-12-25.
Data through August 4, 2026.
Frequently asked questions about the weather in Phnom Penh
What is the hottest temperature ever recorded in Phnom Penh?
The highest temperature in this record for Phnom Penh is 39.3°C, measured on 1998-04-14. That is a recorded daily value from Phnom Penh's own series covering 1976 to 2025, not an estimate or a regional average.
What is the coldest temperature ever recorded in Phnom Penh?
The lowest temperature in this record for Phnom Penh is 15.0°C, measured on 1999-12-25. Together with the heat record above, that spans the full range this city has actually experienced across 1976 to 2025.
How much rain does Phnom Penh get a year?
Phnom Penh averages 1466mm of precipitation a year, spread across roughly 196 days with at least 1mm. That average is taken over 50 complete calendar years, so one exceptionally wet or dry year does not set the figure.
What was the wettest day on record in Phnom Penh?
On 2012-09-28, 115.6mm fell on Phnom Penh, the highest single-day total in this series. For scale, that is roughly 8% of what the city receives in an average full year, in one day.
How many hours of sunshine does Phnom Penh get a year?
Phnom Penh averages 3674 sunshine hours a year, which works out to about 10.1 hours a day across the whole year. Sunshine hours measure the time direct sunlight actually reaches the ground, not simply how long it is light.
How warm are summers and how cold are winters in Phnom Penh?
Across the summer months Phnom Penh averages a daytime high near 32°C, while winter nights average 22.8°C. The seasons here are set from Phnom Penh's position relative to the equator rather than a fixed northern-hemisphere calendar.
What is the strongest wind recorded in Phnom Penh?
The strongest wind speed recorded in Phnom Penh is 30 km/h, on 1977-03-04. That is the daily maximum sustained wind rather than the peak gust, which typically runs higher still.
