Siem Reap Climate by Month
Siem Reap, Cambodia
Hot all year, with a rainy season from June to October.
Hot all year, with a rainy season from June to October: that's Siem Reap's climate in short. April is the warmest month, with highs around 96°F (36°C); December is the coolest at 88°F (31°C), and nights dip to 68°F (20°C). It gets 53 in (1342 mm) of rain a year, 76% of it from June to October. January and February are almost completely dry.
- Warmest month
- 96°F(36°C)
- Average high, April
- Coldest nights
- 68°F(20°C)
- Average low, January
- Rain per year
- 53 in(1342 mm)
- Wettest: September
- Humidity
- 73%
- Sunniest: April
Best and worst months in Siem Reap
Best for weatherThe most comfortable weather comes in December and January, with highs around 89°F (31°C) and almost no rain.
Least pleasantAugust and September are the least pleasant; September is the wettest, with 9.8 in (248 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)
Siem Reap weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 89°F(32°C) | 68°F(20°C) | 0.1 in(2 mm) | 67% | 5.5 |
| FebFebruary | 92°F(33°C) | 71°F(22°C) | 0.2 in(6 mm) | 63% | 5.9 |
| MarMarch | 95°F(35°C) | 76°F(24°C) | 0.9 in(23 mm) | 63% | 6.2 |
| AprApril | 96°F(36°C) | 78°F(25°C) | 2.3 in(58 mm) | 67% | 6.2 |
| MayMay | 94°F(35°C) | 77°F(25°C) | 6.1 in(155 mm) | 71% | 5.7 |
| JunJune | 92°F(34°C) | 77°F(25°C) | 6.7 in(169 mm) | 74% | 5.5 |
| JulJuly | 90°F(32°C) | 76°F(25°C) | 7.8 in(197 mm) | 78% | 4.8 |
| AugAugust | 90°F(32°C) | 76°F(25°C) | 8.4 in(213 mm) | 81% | 4.9 |
| SepSeptember | 89°F(32°C) | 76°F(24°C) | 9.8 in(248 mm) | 82% | 4.7 |
| OctOctober | 89°F(31°C) | 75°F(24°C) | 7.4 in(189 mm) | 81% | 5.3 |
| NovNovember | 89°F(32°C) | 72°F(22°C) | 2.6 in(65 mm) | 76% | 5.2 |
| DecDecemberBest | 88°F(31°C) | 69°F(20°C) | 0.7 in(17 mm) | 69% | 5.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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