Vientiane Weather and Climate: A Comprehensive Guide
Vientiane has pretty similar weather over the course of the year.
It is also known for its large amounts of rainfall.
Now, let’s break down all the climate details for a clearer picture.
Average maximum day and minimum night temperature
With minimal seasonal shifts, Vientiane experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very hot 37°C in April to a very warm 30°C in the coolest month, January.
Nights are cooler, with lows often dropping to around 17°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Vientiane has a notably wet climate with abundant precipitation, recording 1948 mm of rainfall per year. The climate in Vientiane shows significant variation throughout the year. Expect heavy rainfall in August, with an average of 399 mm of precipitation over 24 rainy days. In contrast, December offers drier and sunnier days, with around 10 mm of rainfall over 2 rainy days. For more details, please visit our Vientiane Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Vientiane serves as an ideal destination. Expect longer, more sun-filled days in December with an average of 8.3 hours of sunshine daily, and embrace the darker days in July, offering only 4.3 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Vientiane.
The city experiences its highest humidity in August, reaching 84%. In March, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The average wind speed over the year ranges from 1 m/s to 1 m/s. It is lower in January, February, March, April, May, June, July, August, September, October, November and December and higher in January, February, March, April, May, June, July, August, September, October, November and December.
The mean monthly wind speed over the year (meters per second)
clear and no rain clear and no rain clear and no rainForecast for Vientiane
4 m/s
1 m/s
1 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Vientiane in Laos
Other facts from our historical weather data:Rainy season in Vientiane occurs in the months of May, June, July, August and September.
Yes, the months of January, February and December are very dry.
April has an average maximum temperature of 37°C and is the hottest month of the year.
The coolest month is January with an average maximum temperature of 30°C.
August tops the wettest month list with 399 mm of rainfall.
December is the driest month with 10 mm of precipitation.
December is the sunniest month with an average of 249 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
