Vientiane Weather History
Laos · Asia · Weather data 1976–today
Vientiane sits 1999km from the equator, 174m above sea level. That combination gives it a hot climate with one clear dry season (Tropical savanna climate). Its record high is 42.2°C, set 2023-05-07, its record low 8.0°C, set 1999-12-24.
Data through August 4, 2026.
Frequently asked questions about the weather in Vientiane
What is the hottest temperature ever recorded in Vientiane?
The highest temperature in this record for Vientiane is 42.2°C, measured on 2023-05-07. That is a recorded daily value from Vientiane's own series covering 1976 to 2025, not an estimate or a regional average.
What is the coldest temperature ever recorded in Vientiane?
The lowest temperature in this record for Vientiane is 8.0°C, measured on 1999-12-24. Together with the heat record above, that spans the full range this city has actually experienced across 1976 to 2025.
How much rain does Vientiane get a year?
Vientiane averages 2010mm of precipitation a year, spread across roughly 169 days with at least 1mm. That average is taken over 50 complete calendar years, so one exceptionally wet or dry year does not set the figure.
What was the wettest day on record in Vientiane?
On 1983-06-27, 166.4mm fell on Vientiane, the highest single-day total in this series. For scale, that is roughly 8% of what the city receives in an average full year, in one day.
How many hours of sunshine does Vientiane get a year?
Vientiane averages 3419 sunshine hours a year, which works out to about 9.4 hours a day across the whole year. Sunshine hours measure the time direct sunlight actually reaches the ground, not simply how long it is light.
How warm are summers and how cold are winters in Vientiane?
Across the summer months Vientiane averages a daytime high near 30.1°C, while winter nights average 17.7°C. The seasons here are set from Vientiane's position relative to the equator rather than a fixed northern-hemisphere calendar.
What is the strongest wind recorded in Vientiane?
The strongest wind speed recorded in Vientiane is 34 km/h, on 2020-09-19. That is the daily maximum sustained wind rather than the peak gust, which typically runs higher still.
