Weather in September
Temperature
In Riyadh, the average high-temperature in September marginally drops from an extremely hot 43.6°C (110.5°F) in August to a still blistering 40.4°C (104.7°F). In September, in Riyadh, the average low-temperature is 25.9°C (78.6°F).Humidity
In September, the average relative humidity is 14%.Rainfall
In Riyadh, rain does not fall in June, July and September.Daylight
In September, the average length of the day in Riyadh is 12h and 17min.On the first day of the month, sunrise is at 05:34 and sunset at 18:12. On the last day of September, sunrise is at 05:44 and sunset at 17:41 +03.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 11. A UV Index value of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 11 in September transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.
FAQ
What is the temperature in September in Riyadh?
What is the average humidity in September in Riyadh?
What is the driest month in Riyadh?
Does it rain in Riyadh in September?
What is the average length of the day in September in Riyadh?
When are sunrise and sunset in September in Riyadh?
How many hours of sunshine does Riyadh have in September?
How high is the UV index in September in Riyadh?
Average temperature in September
Riyadh, Saudi Arabia
- Average high temperature in September: 40.4°C
The warmest month (with the highest average high temperature) is August (43.6°C).
The month with the lowest average high temperature is January (20.2°C).
- Average low temperature in September: 25.9°C
The month with the highest average low temperature is July (29.3°C).
The coldest month (with the lowest average low temperature) is January (9°C).
Average humidity in September
Riyadh, Saudi Arabia
- Average humidity in September: 14%
The months with the highest relative humidity are January and December (47%).
The month with the lowest relative humidity is July (10%).
Average rainfall in September
Riyadh, Saudi Arabia
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is April (23.8mm).
The driest months (with the least rainfall) are June, July and September (0mm).
Average rainfall days in September
Riyadh, Saudi Arabia
- Average rainfall days in September: 0 days
The month with the highest number of rainy days is April (11.3 days).
The months with the least rainy days are June and September (0 days).
Average daylight in September /
Average sunshine in September
Riyadh, Saudi Arabia
- Average daylight in September: 12h and 17min
The month with the longest days is June (Average daylight: 13h and 39min).
The month with the shortest days is December (Average daylight: 10h and 38min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).
Average UV index in September
Riyadh, Saudi Arabia
- Average UV index in September: 11
The months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 5).
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