Average annual temperature is 22.8 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: 6.4 °C
Number of sunny days: 163 days
Number of rainy days: 202 days
Look at detailed online map of Sơn La
* Weather data for Sơn La Vietnam is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.3 | 32.6 | 36.1 | 39.0 | 39.5 | 40.0 | 34.1 | 30.5 | 29.6 | 30.5 | 31.0 | 30.7 |
| Average daytime temperature (°C) | 21.8 | 26.2 | 28.4 | 32.9 | 34.6 | 30.3 | 30.8 | 28.0 | 27.9 | 28.1 | 27.1 | 23.7 |
| Average temperature (°C) | 15.2 | 19.5 | 21.7 | 25.8 | 28.0 | 25.8 | 26.3 | 24.5 | 24.3 | 23.2 | 21.0 | 18.1 |
| Average night temperature (°C) | 9.8 | 14.5 | 16.6 | 20.5 | 22.5 | 22.3 | 22.4 | 21.7 | 21.1 | 19.0 | 15.9 | 13.4 |
| Absolute minimum temperature (°C) | 6.4 | 10.9 | 11.4 | 17.1 | 19.4 | 20.3 | 21.0 | 19.2 | 19.8 | 15.9 | 11.5 | 6.7 |
| 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 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.6 | 13.2 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.3 | 9.3 | 9.0 | 10.4 | 10.7 | 8.6 | 10.9 | 7.2 | 9.3 | 9.9 | 9.8 | 8.4 |
| Precipitation (mm) | 3 | 22 | 17 | 24 | 72 | 418 | 220 | 570 | 126 | 53 | 9 | 12 |
| Sunny days | 27 | 19 | 18 | 19 | 9 | 0 | 2 | 1 | 4 | 21 | 22 | 21 |
| Rainy days | 4 | 9 | 13 | 11 | 22 | 30 | 29 | 30 | 26 | 10 | 8 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sơn La is at