Siem Reap weather in January
January is one of the best months to visit Siem Reap: highs of 33°C (92°F) and about 12 mm (0.5 in) of rain on average. Nights average 21°C (69°F) and cloud cover 43% (NASA POWER, 2001–2025 averages). It is the 2nd driest month of the year and the 5th warmest. Compared with December, it is warmer and wetter; February brings highs of 36°C (96°F) and 16 mm (0.6 in) of rain.
Is January a good time to visit Siem Reap?
best month Weather score 80/100.
Yes. January is one of the best months for weather in Siem Reap.
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Does it rain a lot in Siem Reap in January?
No, it is usually dry: about 12 mm (0.5 in) falls in an average January. It is the 2nd driest month of the year.
How warm is Siem Reap in January?
Days average 33°C (92°F) and nights 21°C (69°F).
Siem Reap weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 33°C (92°F) | 21°C (69°F) | 12 mm | 43% | best |
| February | 36°C (96°F) | 23°C (73°F) | 16 mm | 39% | fair |
| March | 36°C (97°F) | 25°C (77°F) | 46 mm | 61% | fair |
| April | 36°C (96°F) | 26°C (78°F) | 75 mm | 70% | least pleasant |
| May | 34°C (92°F) | 25°C (77°F) | 140 mm | 83% | least pleasant |
| June | 32°C (89°F) | 25°C (76°F) | 168 mm | 86% | least pleasant |
| July | 30°C (87°F) | 24°C (75°F) | 197 mm | 88% | least pleasant |
| August | 30°C (86°F) | 24°C (75°F) | 195 mm | 90% | least pleasant |
| September | 30°C (86°F) | 24°C (75°F) | 231 mm | 90% | least pleasant |
| October | 31°C (87°F) | 23°C (74°F) | 138 mm | 75% | fair |
| November | 31°C (88°F) | 22°C (71°F) | 37 mm | 60% | best |
| December | 32°C (89°F) | 20°C (68°F) | 7 mm | 52% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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