Vientiane
Elevation 174 m17.98° N, 102.63° E
When to go?
Mean 23 °C, 1 rain day in the month (7 mm).
Good for
- Ideal to visitTemperature and rain in the ideal range.
Mean 25 °C, 2 rain days in the month (14 mm).
Against
- Hothighs of 32 °C
Mean 28 °C, 4 rain days in the month (34 mm).
Against
- Hothighs of 34 °C
Mean 30 °C, 7 rain days in the month (75 mm).
Against
- Hothighs of 36 °C
Mean 29 °C, 14 rain days in the month (210 mm).
Against
- Hothighs of 34 °C
Mean 29 °C, 18 rain days in the month (218 mm).
Against
- Hothighs of 33 °C
- Often rainyrain on 6 days in 10
Mean 29 °C, 23 rain days in the month (273 mm).
Against
- Hothighs of 32 °C
- Often rainyrain on 7 days in 10
Mean 29 °C, 22 rain days in the month (315 mm).
Against
- Hothighs of 32 °C
- Often rainyrain on 7 days in 10
- Torrential rain14 mm per rain day
Mean 28 °C, 17 rain days in the month (253 mm).
Against
- Hothighs of 32 °C
- Often rainyrain on 6 days in 10
Mean 27 °C, 7 rain days in the month (77 mm).
Against
- Hothighs of 32 °C
Mean 26 °C, 2 rain days in the month (15 mm).
Against
- Hothighs of 31 °C
Mean 23 °C, 1 rain day in the month (4 mm).
Good for
- Ideal to visitTemperature and rain in the ideal range.
The best months are December–January. Avoid February–November (hot, at times often rainy and torrential rain).
What is the climate like?
Temperature and rain
Monthly min and max temperature (°C)
Monthly min and max temperature (°C)
How much it rains
Rain days and how much water
Rain days and how much water
Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day
Colour = the month's rain: 103060100160250400mm
Daylight hours
Daylight and sky: sunrise, sunset and cloud cover
daylight under a clear sky (average share)daylight under cloud
daylight under a clear sky (average share)daylight under cloud
Times on the 15th of each month, in local time: daylight saving where and when it applies, standard time in the other months.
Effect of climate change
Today's climate (1996–2025) compared with 1961–1990:
In short
Year by year
Temperature of each year
Against 1961–1990 the mean temperature of today (1996–2025) has changed by +0.6 °C; in the last ten years by +1.0 °C. Warmest year: 2024 (+1.8 °C), coldest: 1953 (−1.2 °C).
November and October warmed the most (+1.0 and +0.8 °C), February the least (+0.3 °C).
Warming stripes: after an idea by Ed Hawkins (University of Reading), showyourstripes.info, CC BY 4.0.
Rain of each year (% against 1961–1990)
more rain than in 1961–1990less rain
Rain in a year: −3 % every ten years.