Climate Overview
The climate in Muang Xay is warm and mild. The average annual temperature is 22°C and approximately 1951mm of precipitation falls per year. August is the wettest month, receiving around 452mm of rainfall. Muang Xay is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are December, January, February, when temperatures can drop to 13°C.
Temperature
Muang Xay sees moderate temperature variation throughout the year, ranging from 13°C to 31°C. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 26°C. December is the coolest month, with minimum temperatures around 13°C and an average of 17°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.
Precipitation
Muang Xay is a fairly wet location, receiving approximately 1951mm of precipitation annually, which averages out to around 163mm per month. The wettest month is August, averaging 452mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 15mm. That's 437mm 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.
Wind
Muang Xay is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, 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.
Seasons
93 days until Autumn
It is currently summer in Muang Xay, which began on June 21, 2026. Muang Xay 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 May at around 31°C, while the coldest stretch bottoms out in December near 13°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 16 to 31°C. Rainfall is heavy, totalling around 353mm across the season with a monthly average of 118mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 1062mm across the season with a monthly average of 354mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 16 to 29°C. Rainfall is heavy, totalling around 431mm across the season with a monthly average of 144mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 26°C. Rainfall is relatively light, with around 105mm over the season and a monthly average of 35mm. Winds are generally light, averaging 1km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Muang Xay is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 41mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 31°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Muang Xay 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.
