Average annual temperature is 29.3 °C
Absolute maximum temperature: 37.6 °C
Absolute minimum temperature: 20.7 °C
Number of sunny days: 318 days
Number of rainy days: 47 days
Look at detailed online map of Riyāḑ
* Weather data for Riyāḑ Saudi Arabia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 28.3 | 28.4 | 29.7 | 31.6 | 33.4 | 36.0 | 37.6 | 36.3 | 36.6 | 35.5 | 31.7 | 29.6 |
| Average daytime temperature (°C) | 26.6 | 26.7 | 27.8 | 29.7 | 31.2 | 33.6 | 33.8 | 33.4 | 32.9 | 31.8 | 30.2 | 28.7 |
| Average temperature (°C) | 25.1 | 25.4 | 26.5 | 28.7 | 30.4 | 31.8 | 31.9 | 32.0 | 32.0 | 30.9 | 29.2 | 27.3 |
| Average night temperature (°C) | 23.4 | 23.6 | 24.8 | 27.4 | 29.6 | 30.6 | 30.4 | 30.8 | 31.3 | 29.6 | 27.5 | 25.3 |
| Absolute minimum temperature (°C) | 21.3 | 21.5 | 20.7 | 23.5 | 27.1 | 29.4 | 29.1 | 29.4 | 30.5 | 25.4 | 23.9 | 22.0 |
| 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) | 9.4 | 10.7 | 10.4 | 11.1 | 11.3 | 11.3 | 10.7 | 10.6 | 10.5 | 9.7 | 9.5 | 9.4 |
| Precipitation (mm) | 28 | 0 | 5 | 7 | 0 | 0 | 0 | 0 | 0 | 27 | 32 | 25 |
| Sunny days | 15 | 27 | 28 | 25 | 30 | 30 | 31 | 31 | 30 | 28 | 21 | 22 |
| Rainy days | 16 | 1 | 3 | 5 | 1 | 0 | 0 | 0 | 0 | 3 | 9 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riyāḑ is at