Average annual temperature is 21.8 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: 4.4 °C
Number of sunny days: 118 days
Number of rainy days: 247 days
Look at detailed online map of Ban Sammun
* Weather data for Ban Sammun 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) | 25.3 | 28.2 | 31.8 | 34.9 | 34.5 | 34.2 | 32.2 | 30.1 | 29.6 | 28.7 | 28.2 | 27.0 |
| Average daytime temperature (°C) | 22.0 | 25.2 | 27.5 | 31.7 | 30.9 | 28.0 | 28.8 | 26.0 | 27.4 | 26.5 | 25.3 | 23.6 |
| Average temperature (°C) | 15.6 | 19.3 | 21.7 | 25.8 | 25.7 | 23.9 | 24.3 | 22.8 | 23.1 | 21.8 | 19.7 | 17.9 |
| Average night temperature (°C) | 9.3 | 13.5 | 16.4 | 20.4 | 21.4 | 20.9 | 21.0 | 20.4 | 19.8 | 17.6 | 15.0 | 12.8 |
| Absolute minimum temperature (°C) | 4.4 | 8.9 | 12.0 | 16.4 | 18.2 | 19.8 | 20.2 | 18.8 | 18.0 | 13.9 | 10.5 | 5.8 |
| 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 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.2 | 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) | 9.5 | 10.3 | 9.7 | 10.9 | 10.8 | 8.3 | 9.9 | 6.0 | 9.4 | 10.0 | 9.9 | 9.3 |
| Precipitation (mm) | 4 | 27 | 20 | 48 | 97 | 420 | 312 | 491 | 180 | 50 | 26 | 18 |
| Sunny days | 27 | 16 | 10 | 15 | 6 | 0 | 0 | 1 | 1 | 11 | 17 | 14 |
| Rainy days | 4 | 12 | 21 | 15 | 25 | 30 | 31 | 30 | 29 | 20 | 13 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ban Sammun is at