Climate Insights for Ubon Ratchathani

The climate in Ubon Ratchathani is temperate. The average annual temperature is 13°C and approximately 211mm of precipitation falls per year. October is the wettest month, receiving around 33mm of rainfall. Ubon Ratchathani is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, October. The coldest months are June, July, March, when temperatures can drop to 3°C.

Ubon Ratchathani sees moderate temperature variation throughout the year, ranging from 3°C to 22°C. August is the warmest month, though highs remain moderate at 22°C with a mean of 15°C. June is the coolest month, with minimum temperatures around 3°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between July and August, with a 6°C shift in average temperatures.

Ubon Ratchathani is a quite dry location, receiving approximately 211mm of precipitation annually, which averages out to around 18mm per month. The wettest month is May, averaging 33mm of rainfall. June and July also tend to see above-average precipitation. The driest month is January, with just 1mm. That's 31mm less than May, 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.

Ubon Ratchathani is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 6km/h in winter, 2km/h in spring, 2km/h in summer, 4km/h in autumn.

It is currently summer in Ubon Ratchathani, which began on June 21, 2026. Ubon Ratchathani 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 August at around 22°C, while the coldest stretch bottoms out in June near 3°C. Autumn is next, beginning on September 23, 2026 — 17 days from now.

The best time to visit Ubon Ratchathani is during April, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 23mm per month. By contrast, June can be quite cold with temperatures dropping to 3°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Ubon Ratchathani 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.