Weather in Vientiane in December 2025
- December is usually the coldest month of the year in Vientiane;
Average weather
Average temperature in Vientiane in December
Going from a maximum of +34°C during the day to a minimum of +12°C during the night, the temperature in December averages around +31°C.
The average maximum temperature goes up 5% by the end of the month, compared with the beginning of the month, from +32°C to +33°C.
Is Vientiane warm or cold in December?
Vientiane is typically warm in December.
Maximum temperatures go down compared to the previous month from +30°C to +28°C. The minimum temperature also goes down from +20°C to +17°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is the coldest month in Vientiane, here is the comparison with other months:
Climate in Vientiane in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +28°C | +29°C | ||||
| Min. temperature | ||||||
| +10°C | +6°C | +8°C | ||||
| Max. temperature | ||||||
| +36°C | +34°C | +36°C | ||||
| Rainfall | ||||||
| 15 mm | 5 mm | 8 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 73% | 70% | 71% | ||||
| Air pressure | ||||||
| 1013 HPa | 1015 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 11 | 16 | 17 | ||||
| Cloudy days | ||||||
| 14 | 13 | 11 | ||||
| Rainy days | ||||||
| 5 | 2 | 3 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December weather is still as great as in November. It’s getting colder in December. From +30°C in the day, the average maximum temperature lowers to +28°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 15 mm to 5 mm. It feels drier, as humidity decreases from 73% to 70%. The average wind speed doesn’t change much during December, staying around 1 m/s. The good news is there are likely to be more sunny days in December, from 11 to 16.
January brings much the same weather, it remains great.
Wind
The average wind speed is 1 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Vientiane is gradually decreasing during December, going from 2 m/s to 1 m/s over the course of the month.
How was the weather last December in Vientiane?
Climate Change over Years
The climate in Vientiane in December has not changed much over the last 43 years.
The average temperature was the lowest in 1996 (+30°C) and the highest in 2019 (+33°C). The driest year was 2019 with only 1054 mm of rainfall, and the wettest year was 1994 with 2326 mm.
FAQ
Is December a good time to visit Vientiane?
Can you sunbathe in Vientiane in December?
Is Vientiane rainy in December?
Is it sunny in Vientiane in December?
Other cities in Laos
Monthly weather in Vientiane
Source of the data
For this page, we’ve looked at the typical weather in Vientiane, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
