Climate Overview
The climate in Kampong Chhnang is hot. The average annual temperature is 29°C and approximately 1457mm of precipitation falls per year. September is the wettest month, receiving around 267mm of rainfall. Kampong Chhnang is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, May. The coldest months are January, December, February, when temperatures can drop to 23°C.
Temperature
Kampong Chhnang sees moderate temperature variation throughout the year, ranging from 23°C to 37°C. April is the hottest month, with daytime highs reaching 37°C and an average of 31°C. January is the coolest month, with minimum temperatures around 23°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Kampong Chhnang is a fairly wet location, receiving approximately 1457mm of precipitation annually, which averages out to around 121mm per month. The wettest month is September, averaging 267mm of rainfall. October and August also tend to see above-average precipitation. The driest month is February, with just 14mm. That's 254mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Kampong Chhnang is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.
Seasons
3 days until Autumn
It is currently summer in Kampong Chhnang, which began on June 21, 2026. Kampong Chhnang is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in April at around 37°C, while the coldest stretch bottoms out in January near 23°C. Autumn is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 26 to 37°C. Precipitation is moderate at around 248mm for the season, averaging 83mm per month. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 35°C. Rainfall is heavy, totalling around 522mm across the season with a monthly average of 174mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 33°C. Rainfall is heavy, totalling around 628mm across the season with a monthly average of 209mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 34°C. Rainfall is relatively light, with around 58mm over the season and a monthly average of 19mm. Winds are generally light, averaging 8km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Kampong Chhnang based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
