Climate Insights for Loei

The climate in Loei is hot. The average annual temperature is 26°C and approximately 1295mm of precipitation falls per year. September is the wettest month, receiving around 236mm of rainfall. Loei 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 January, December, February, when temperatures can drop to 16°C.

Loei sees moderate temperature variation throughout the year, ranging from 16°C to 35°C. The warmest month is April, when average highs reach 35°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 16°C and an average of 22°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 3°C shift in average temperatures.

Loei is a fairly wet location, receiving approximately 1295mm of precipitation annually, which averages out to around 108mm per month. The wettest month is September, averaging 236mm of rainfall. August and July also tend to see above-average precipitation. The driest month is December, with just 8mm. That's 229mm 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.

Loei 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 April, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in Loei, which began on March 20, 2026. Loei 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 January near 16°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Loei is during January, February, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 19mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 35°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Loei 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.