Climate Insights for Phanom Thuan

The climate in Phanom Thuan is hot. The average annual temperature is 29°C and approximately 1110mm of precipitation falls per year. September is the wettest month, receiving around 219mm of rainfall. Phanom Thuan 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 22°C.

Phanom Thuan sees moderate temperature variation throughout the year, ranging from 22°C to 38°C. April is the hottest month, with daytime highs reaching 38°C and an average of 31°C. January is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 2°C shift in average temperatures.

Phanom Thuan is a moderately rainy area, receiving approximately 1110mm of precipitation annually, which averages out to around 92mm per month. The wettest month is September, averaging 219mm of rainfall. October and July also tend to see above-average precipitation. The driest month is December, with just 10mm. That's 209mm 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.

Phanom Thuan is mildly breezy, with an average annual wind speed of 14km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 11km/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 13km/h in winter, 13km/h in spring, 16km/h in summer, 12km/h in autumn.

It is currently spring in Phanom Thuan, which began on March 20, 2026. Phanom Thuan 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 38°C, while the coldest stretch bottoms out in January near 22°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Phanom Thuan 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.