Phnom Penh, Cambodia Weather
Phnom Penh hourly forecast: next 24 hours
Today's high of 92°F (33°C) is right in line with the typical August high of 90°F (32°C).
Current conditions in detail
Phnom Penh weather tomorrow (Tuesday, August 18)
Tomorrow in Phnom Penh looks cloudy, with a high of 84° and an overnight low of 79°. Precipitation chance is modest at 25%. Winds top out near 15 mph, and the UV index reaches 8 (high).
Phnom Penh 14-day forecast
About the weather in Phnom Penh
Phnom Penh has a tropical wet-and-dry climate, marked by year-round warmth split between a rainy season and a pronounced dry season. Average daytime highs range from about 87°F (30°C) in December to around 94°F (35°C) in April, and the city records roughly 199 days of measurable precipitation a year.
Phnom Penh weather: quick facts
- Hottest month: April - highs near 94°F (35°C)
- Coldest month: December - highs near 87°F (30°C)
- Record high: 103°F (39°C) · Record low: 65°F (18°C) (2015–2024)
- Wettest month: October (25 rainy days) · Sunniest: March (11.4 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on April. Highs average 94°F (35°C) and overnight lows stay near 79°F (26°C). The coolest month is December, with typical highs of 87°F (30°C) and lows around 74°F (23°C). Based on 2015–2024 weather data, temperatures have reached as high as 103°F (39°C) and dropped as low as 65°F (18°C).
Rain, sun and snow
October is usually the wettest month. It brings about 12.0 inches (306 mm) of rain over 25 days, while February is the driest. March brings the most sunshine, averaging 11.4 hours of sun a day.
Season by season
March through May
March through May in Phnom Penh is intensely hot, with daytime highs averaging 94°F (34°C) and nights around 79°F (26°C); expect showers on roughly 43 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
June through August
June through August in Phnom Penh brings hot afternoons, with daytime highs averaging 90°F (32°C) and nights around 78°F (25°C); expect showers on roughly 74 days across the season.
September through November
September through November in Phnom Penh runs hot, with daytime highs averaging 87°F (31°C) and nights around 76°F (24°C); expect showers on roughly 69 days across the season.
December through February
December through February in Phnom Penh is hot, with daytime highs averaging 89°F (32°C) and nights around 74°F (23°C); rain falls on about 13 days over the three months.
Average temperatures in Phnom Penh by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 89° | 74° | 4 | 0.7 in | 10.4 h/day | 67% |
| February | 91° | 74° | 2 | 0.6 in | 11.0 h/day | 62% |
| March | 94° | 77° | 5 | 1.5 in | 11.4 h/day | 63% |
| April | 94° | 79° | 14 | 3.7 in | 11.2 h/day | 69% |
| May | 92° | 80° | 25 | 7.0 in | 10.1 h/day | 77% |
| June | 90° | 78° | 24 | 6.4 in | 9.3 h/day | 79% |
| July | 89° | 78° | 24 | 7.4 in | 8.4 h/day | 80% |
| August | 90° | 78° | 26 | 8.2 in | 9.0 h/day | 80% |
| September | 88° | 77° | 28 | 11.7 in | 8.0 h/day | 85% |
| October | 87° | 76° | 25 | 12.0 in | 8.7 h/day | 85% |
| November | 87° | 76° | 16 | 6.0 in | 9.8 h/day | 80% |
| December | 87° | 74° | 7 | 1.6 in | 9.9 h/day | 72% |