Average annual temperature is 27.3 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 16.4 °C
Number of sunny days: 89 days
Number of rainy days: 276 days
Look at detailed online map of Siem Reap
* Weather data for Siem Reap Cambodia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.4 | 33.6 | 35.7 | 36.9 | 38.8 | 34.1 | 32.9 | 33.5 | 31.7 | 32.3 | 32.0 | 32.6 |
| Average daytime temperature (°C) | 28.7 | 31.8 | 33.3 | 34.3 | 33.5 | 31.8 | 31.1 | 31.9 | 30.5 | 30.8 | 30.3 | 30.4 |
| Average temperature (°C) | 24.2 | 26.6 | 28.0 | 29.8 | 29.4 | 28.1 | 27.6 | 28.0 | 26.8 | 26.9 | 26.1 | 25.9 |
| Average night temperature (°C) | 19.8 | 21.8 | 23.2 | 25.8 | 26.0 | 25.4 | 25.2 | 25.4 | 24.4 | 24.1 | 22.7 | 22.0 |
| Absolute minimum temperature (°C) | 16.4 | 19.5 | 20.4 | 23.6 | 24.0 | 24.3 | 24.3 | 24.2 | 23.4 | 23.4 | 19.1 | 17.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.6 | 12.2 | 11.8 | 11.5 | 11.4 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.8 | 10.4 | 10.9 | 10.4 | 10.4 | 8.8 | 7.5 | 8.3 | 6.2 | 8.3 | 9.2 | 9.7 |
| Precipitation (mm) | 114 | 25 | 31 | 112 | 232 | 256 | 316 | 234 | 403 | 350 | 132 | 21 |
| Sunny days | 21 | 15 | 22 | 4 | 2 | 0 | 0 | 1 | 0 | 0 | 9 | 15 |
| Rainy days | 10 | 13 | 9 | 26 | 29 | 30 | 31 | 30 | 30 | 31 | 21 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siem Reap is at