Average annual temperature is 26.6 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: 11.8 °C
Number of sunny days: 164 days
Number of rainy days: 201 days
Look at detailed online map of Vientiane
* Weather data for Vientiane Laos is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.0 | 35.5 | 39.0 | 39.6 | 42.1 | 34.6 | 34.3 | 33.6 | 32.2 | 31.7 | 32.9 | 32.4 |
| Average daytime temperature (°C) | 26.4 | 30.7 | 33.4 | 36.5 | 34.7 | 31.1 | 31.1 | 30.0 | 29.8 | 30.3 | 30.1 | 28.7 |
| Average temperature (°C) | 21.1 | 25.2 | 27.5 | 31.0 | 30.0 | 27.5 | 27.6 | 26.9 | 26.4 | 26.6 | 25.5 | 23.8 |
| Average night temperature (°C) | 15.5 | 19.3 | 21.8 | 25.8 | 25.7 | 24.6 | 24.6 | 24.3 | 23.8 | 23.1 | 21.1 | 19.0 |
| Absolute minimum temperature (°C) | 11.8 | 13.6 | 17.5 | 23.3 | 23.2 | 23.7 | 23.3 | 23.5 | 23.0 | 21.0 | 17.1 | 12.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.6 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.7 | 10.2 | 10.3 | 10.9 | 10.3 | 8.1 | 8.8 | 6.2 | 7.0 | 9.6 | 10.1 | 10.0 |
| Precipitation (mm) | 0 | 2 | 24 | 33 | 178 | 446 | 375 | 297 | 561 | 262 | 12 | 0 |
| Sunny days | 30 | 23 | 23 | 19 | 5 | 0 | 1 | 0 | 1 | 10 | 24 | 28 |
| Rainy days | 1 | 5 | 8 | 11 | 26 | 30 | 30 | 31 | 29 | 21 | 6 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vientiane is at