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Hourly Forecast
Daylight Hours
05:57
Sunrise
17:56
Sunset
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Waxing Gibbous
14:18
Moonrise
01:53
Moonset
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View stargazing scoreWeather in Siem Reap today, September 21, 2026
Rain features in Siem Reap on September 21, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Early hours look the most unsettled, with rain probability near 88% by 11:00. The thickest cloud arrives around 01:00, reaching about 100%.
The temperature range runs from about 25°C up to 30°C. Expect humidity between 73% and 97%, most humid near 04:00. Expect gentle winds, highest near 10:00 at 2.5 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 92% around 17:00. Cloud also stays substantial, close to 99% near 19:00. Visibility holds near 14.8 km, though it can fall to 6.8 km. The sun rises at 05:57 and sets at 17:56, for a total of 11 hours 59 minutes of sunlight today.
Overall, Siem Reap on September 21, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 92% and the high sits around 30°C.
Frequently asked questions about weather in Siem Reap
How warm does it get in Siem Reap?
The warmest month in Siem Reap is April, with average high temperatures of 35°C. The average temperature during this period is around 31°C.
How cold does it get in Siem Reap?
The coldest month in Siem Reap is December, with average low temperatures of 23°C. The average temperature during this period is around 26°C.
What is the wettest time of year in Siem Reap?
The wettest month in Siem Reap is September, with an average of 260mm of precipitation.
What is the driest time of year in Siem Reap?
The driest month in Siem Reap is February, with an average of 16mm of precipitation.
