The climate in Riyadh during December can be summarized as mild and dry.
December is in the winter in Riyadh and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 9°C (49°F) is normal.
|Daytime temperature||21.7°C 71°F|
|Nightly temperature||9.2°C 48.5°F|
|Average temperature||15.4°C 59.7°F|
|Daily sunshine||8.3 hrs|
|Avg rainfall||14 mm 0.5 ins|
|Rainy days||4 days|
|Sea temperature||24°C 75.2°F|
|Windspeed||6.5kph 4 mph|
On average December is the 4th wettest month of the year in Riyadh with around 14mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in December 2019.
|Hottest month:||July||42.5°C 108.5°F|
|Driest month:||June||0mm 0ins|
|Coldest month:||January||19.7°C 67.5°F|
|Wettest month:||March||32mm 1.3ins|