Climate Overview
The climate in Svay Rieng is hot. The average annual temperature is 28°C and approximately 1846mm of precipitation falls per year. October is the wettest month, receiving around 289mm of rainfall. Svay Rieng is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, March. The coldest months are February, January, December, when temperatures can drop to 23°C.
Temperature
Svay Rieng sees moderate temperature variation throughout the year, ranging from 23°C to 35°C. April is the hottest month, with daytime highs reaching 35°C and an average of 30°C. February 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
Svay Rieng is a fairly wet location, receiving approximately 1846mm of precipitation annually, which averages out to around 154mm per month. The wettest month is October, averaging 289mm of rainfall. September and August also tend to see above-average precipitation. The driest month is February, with just 10mm. That's 279mm less than October, 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
Svay Rieng is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
3 days until Summer
It is currently spring in Svay Rieng, which began on March 20, 2026. Svay Rieng 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 35°C, while the coldest stretch bottoms out in February near 23°C. Summer is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 25 to 35°C. Precipitation is moderate at around 282mm for the season, averaging 94mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 33°C. Rainfall is heavy, totalling around 717mm across the season with a monthly average of 239mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 32°C. Rainfall is heavy, totalling around 715mm across the season with a monthly average of 238mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 33°C. Rainfall is relatively light, with around 133mm over the season and a monthly average of 44mm. Winds are generally light, averaging 2km/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 Svay Rieng 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.
