Average annual temperature is 19.5 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 3.2 °C
Number of sunny days: 120 days
Number of rainy days: 245 days
Look at detailed online map of Ban Lassa
* Weather data for Ban Lassa 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) | 23.7 | 27.1 | 29.5 | 32.9 | 32.6 | 30.9 | 29.1 | 28.4 | 28.0 | 26.5 | 26.1 | 25.9 |
| Average daytime temperature (°C) | 20.4 | 24.3 | 26.0 | 29.5 | 28.9 | 26.3 | 26.8 | 24.5 | 24.9 | 24.3 | 23.4 | 22.3 |
| Average temperature (°C) | 13.8 | 17.1 | 19.2 | 22.6 | 22.8 | 21.6 | 22.0 | 20.8 | 20.7 | 19.7 | 17.7 | 16.2 |
| Average night temperature (°C) | 6.9 | 10.1 | 12.9 | 16.7 | 18.3 | 18.4 | 18.5 | 18.1 | 17.5 | 15.7 | 12.6 | 10.5 |
| Absolute minimum temperature (°C) | 3.2 | 6.4 | 9.6 | 14.3 | 16.0 | 17.6 | 17.8 | 17.3 | 16.7 | 12.8 | 9.1 | 4.2 |
| 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 | 11.0 |
| Daylight mean duration (h) | 11.1 | 11.5 | 12.0 | 12.6 | 13.1 | 13.3 | 13.2 | 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 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 9.8 | 10.4 | 10.2 | 11.1 | 11.0 | 8.7 | 10.0 | 6.6 | 8.9 | 9.7 | 9.8 | 9.4 |
| Precipitation (mm) | 7 | 14 | 23 | 67 | 143 | 298 | 233 | 351 | 293 | 112 | 42 | 31 |
| Sunny days | 26 | 16 | 15 | 20 | 1 | 0 | 0 | 1 | 1 | 8 | 17 | 15 |
| Rainy days | 5 | 12 | 16 | 10 | 30 | 30 | 31 | 30 | 29 | 23 | 13 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ban Lassa is at