Climate Insights for Attapeu

The climate in Attapeu is hot. The average annual temperature is 27°C and approximately 1992mm of precipitation falls per year. August is the wettest month, receiving around 398mm of rainfall. Attapeu is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, February. The coldest months are February, December, January, when temperatures can drop to 19°C.

Attapeu sees moderate temperature variation throughout the year, ranging from 19°C to 35°C. April is the hottest month, with daytime highs reaching 35°C and an average of 29°C. February is the coolest month, with minimum temperatures around 19°C and an average of 26°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 2°C shift in average temperatures.

Attapeu is a fairly wet location, receiving approximately 1992mm of precipitation annually, which averages out to around 166mm per month. The wettest month is August, averaging 398mm of rainfall. July and September also tend to see above-average precipitation. The driest month is February, with just 3mm. That's 395mm less than August, 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.

Attapeu is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/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.

It is currently summer in Attapeu, which began on June 21, 2026. Attapeu 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 19°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Attapeu is during December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 28mm per month. By contrast, April can be uncomfortably hot with highs reaching 35°C, while February is the coldest period with lows dropping to 19°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Attapeu 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.