Average annual temperature is 18.9 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: -16.8 °C
Number of sunny days: 313 days
Number of rainy days: 50 days
Number of snow days: 2 days
Look at detailed online map of Lāj
* Weather data for Lāj Iran is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.2 | 18.3 | 27.8 | 34.8 | 35.3 | 41.1 | 40.3 | 37.3 | 39.2 | 31.6 | 22.9 | 19.0 |
| Average daytime temperature (°C) | 6.5 | 12.6 | 21.8 | 26.8 | 30.6 | 36.1 | 36.0 | 33.8 | 29.6 | 25.3 | 18.8 | 14.1 |
| Average temperature (°C) | 1.7 | 7.4 | 16.3 | 20.9 | 24.9 | 30.8 | 30.7 | 28.3 | 23.6 | 19.4 | 13.9 | 8.8 |
| Average night temperature (°C) | -3.2 | 2.2 | 10.4 | 13.6 | 18.3 | 25.2 | 25.3 | 22.8 | 17.6 | 12.7 | 8.6 | 4.0 |
| Absolute minimum temperature (°C) | -16.8 | -4.1 | 4.6 | 4.9 | 7.1 | 20.2 | 22.5 | 15.7 | 12.1 | 7.7 | 2.1 | -1.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.9 | 7.5 | 9.5 | 11.1 | 11.3 | 12.5 | 12.6 | 12.0 | 11.5 | 9.8 | 8.7 | 8.1 |
| Precipitation (mm) | 17 | 50 | 25 | 4 | 3 | 0 | 0 | 0 | 0 | 1 | 5 | 11 |
| Sunny days | 22 | 15 | 22 | 26 | 28 | 30 | 31 | 30 | 30 | 27 | 25 | 27 |
| Rainy days | 7 | 13 | 9 | 4 | 3 | 0 | 0 | 1 | 0 | 4 | 5 | 4 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Lāj is at