Climate Overview
The climate in Mường Lay is warm and mild. The average annual temperature is 22°C and approximately 2290mm of precipitation falls per year. Mường Lay receives a notable amount of rainfall throughout the year, including during its driest month. Mường Lay is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, July, June. The coldest months are January, February, December, when temperatures can drop to 12°C.
Temperature
Mường Lay sees moderate temperature variation throughout the year, ranging from 12°C to 31°C. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 12°C and an average of 16°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 4°C shift in average temperatures.
Precipitation
Mường Lay is a very wet location, receiving approximately 2290mm of precipitation annually, which averages out to around 191mm per month. The wettest month is June, averaging 429mm of rainfall. August and July also tend to see above-average precipitation. The driest month is December, with just 50mm. That's 379mm less than June, 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
Mường Lay is relatively calm, with an average annual wind speed of 5km/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 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Mường Lay, which began on March 20, 2026. Mường Lay 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 January near 12°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 16 to 31°C. Rainfall is heavy, totalling around 546mm across the season with a monthly average of 182mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 1223mm across the season with a monthly average of 408mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 16 to 29°C. Rainfall is heavy, totalling around 336mm across the season with a monthly average of 112mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 12 to 23°C. Precipitation is moderate at around 185mm for the season, averaging 62mm per month. Winds are generally light, averaging 5km/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 Mường Lay is during January, February, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 66mm 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 Mường Lay 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.
