Average annual temperature is 8.4 °C
Absolute maximum temperature: 30.2 °C
Absolute minimum temperature: -15.8 °C
Number of sunny days: 152 days
Number of rainy days: 186 days
Number of snow days: 27 days
Look at detailed online map of Rīāb
* Weather data for Rīāb 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) | 4.0 | 7.7 | 14.9 | 20.3 | 26.0 | 27.4 | 30.2 | 27.9 | 28.0 | 22.3 | 17.3 | 13.9 |
| Average daytime temperature (°C) | -2.0 | -0.4 | 8.3 | 14.1 | 17.7 | 19.1 | 19.9 | 22.7 | 17.9 | 16.3 | 12.7 | 8.3 |
| Average temperature (°C) | -5.2 | -3.8 | 4.1 | 8.7 | 12.5 | 14.9 | 16.2 | 17.7 | 13.3 | 10.8 | 7.4 | 3.1 |
| Average night temperature (°C) | -8.8 | -7.7 | -0.4 | 2.2 | 6.9 | 10.5 | 12.9 | 13.4 | 9.6 | 5.6 | 3.1 | -0.8 |
| Absolute minimum temperature (°C) | -15.8 | -13.1 | -4.8 | -8.6 | -1.8 | 7.9 | 9.8 | 9.8 | 3.7 | 2.0 | -3.3 | -6.8 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 8.3 | 8.1 | 10.8 | 11.2 | 11.4 | 9.7 | 11.3 | 9.0 | 8.9 | 8.4 | 7.5 |
| Precipitation (mm) | 52 | 50 | 171 | 47 | 74 | 76 | 89 | 56 | 102 | 60 | 42 | 22 |
| Sunny days | 17 | 16 | 14 | 14 | 9 | 10 | 5 | 11 | 7 | 13 | 18 | 18 |
| Rainy days | 1 | 0 | 17 | 14 | 22 | 20 | 26 | 20 | 23 | 18 | 12 | 13 |
| Snow days | 13 | 12 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rīāb is at