Climate Overview
The climate in Sihanoukville International Airport is hot. The average annual temperature is 28°C and approximately 2432mm of precipitation falls per year. September is the wettest month, receiving around 405mm of rainfall. Sihanoukville International Airport 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 25°C.
Temperature
Sihanoukville International Airport has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is April, when average highs reach 33°C and the mean temperature sits around 30°C. January is the coolest month, with minimum temperatures around 25°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Sihanoukville International Airport is a very wet location, receiving approximately 2432mm of precipitation annually, which averages out to around 203mm per month. The wettest month is September, averaging 405mm of rainfall. July and October also tend to see above-average precipitation. The driest month is February, with just 28mm. That's 377mm 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
Sihanoukville International Airport is relatively calm, with an average annual wind speed of 9km/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 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 8km/h in winter, 8km/h in spring, 12km/h in summer, 9km/h in autumn.
Seasons
2 days until Autumn
It is currently summer in Sihanoukville International Airport, which began on June 21, 2026. Sihanoukville International Airport 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 33°C, while the coldest stretch bottoms out in January near 25°C. Autumn is next, beginning on September 23, 2026 (2 days from now).
Spring
Temperatures range from 26 to 33°C. Rainfall is heavy, totalling around 347mm across the season with a monthly average of 116mm. Winds are generally light, averaging 8km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 1005mm across the season with a monthly average of 335mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 949mm across the season with a monthly average of 316mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 32°C. Rainfall is relatively light, with around 132mm over the season and a monthly average of 44mm. 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 Sihanoukville International Airport 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.
