Monthly weather forecast and Climate
Riyadh, Saudi Arabia SA

Warmest month (with highest average high temperature) is August (110.5°F).
Month with lowest average high temperature is January (68.4°F).

Month with highest average low temperature is July (84.7°F).
Coldest month (with lowest average low temperature) is January (48.2°F).

Months with highest relative humidity are January and December (47%).
Month with lowest relative humidity is July (10%).

Wettest month (with highest rainfall) is April (0.9").
Driest months (with lowest rainfall) are June, July, August, September and October (0").

Month with highest number of rainy days is April (11.3 days).
Months with lowest number of rainy days are June and September (0 days).

Month with longest days is June (Average daylight: 14h).
Months with shortest days are January, February, November and December (Average daylight: 11h).

Month with most sunshine is June (Average sunshine: 10.9h).
Months with least sunshine are January and December (Average sunshine: 6.9).

Months with highest UV index are April, May, June, July and August (UV index 12).
Month with lowest UV index is December (UV index 5).