Phnom Penh Climate by Month
Phnom Penh, Cambodia
Hot all year, with rain spread through the year.
The climate in Phnom Penh is hot all year, with rain spread through the year. April is the warmest month, with highs around 95°F (35°C); December is the coolest at 89°F (32°C), and nights dip to 74°F (23°C). About 54 in (1359 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 95°F(35°C)
- Average high, April
- Coldest nights
- 74°F(23°C)
- Average low, January
- Rain per year
- 54 in(1359 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: April
Best and worst months in Phnom Penh
Best for weatherThe most comfortable weather comes from December to February, with highs around 91°F (33°C) and about 0.9 in (22 mm) of rain a month.
Least pleasantOctober is the least pleasant month: it's the wettest, with 10 in (255 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in January.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Phnom Penh weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 91°F(33°C) | 74°F(23°C) | 0.5 in(12 mm) | 64% | 5.1 |
| FebFebruaryBest | 92°F(33°C) | 74°F(24°C) | 0.3 in(7 mm) | 62% | 5.5 |
| MarMarch | 94°F(34°C) | 78°F(26°C) | 1.5 in(39 mm) | 63% | 5.9 |
| AprApril | 95°F(35°C) | 80°F(27°C) | 2.6 in(67 mm) | 65% | 5.9 |
| MayMay | 94°F(34°C) | 79°F(26°C) | 6.3 in(159 mm) | 72% | 5.3 |
| JunJune | 93°F(34°C) | 78°F(26°C) | 5.8 in(148 mm) | 74% | 5.2 |
| JulJuly | 91°F(33°C) | 78°F(25°C) | 6.0 in(153 mm) | 74% | 4.5 |
| AugAugust | 91°F(33°C) | 78°F(25°C) | 6.6 in(167 mm) | 75% | 4.8 |
| SepSeptember | 90°F(32°C) | 77°F(25°C) | 8.2 in(208 mm) | 79% | 4.5 |
| OctOctober | 90°F(32°C) | 77°F(25°C) | 10 in(255 mm) | 77% | 5.0 |
| NovNovember | 90°F(32°C) | 76°F(25°C) | 3.9 in(98 mm) | 73% | 4.8 |
| DecDecemberBest | 89°F(32°C) | 74°F(24°C) | 1.8 in(46 mm) | 67% | 4.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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