Riyadh
Saudi Arabia
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Riyadh, Saudi Arabia

A view of the Olaya street metro construction and cars in a traffic jam in the city of Riyadh, Saudi Arabia, viewed from above, at night
A view of the Olaya street metro construction and cars in a traffic jam in the city of Riyadh, Saudi Arabia, viewed from above, at night
August, the last month of the summer, in Riyadh, is another extremely hot month, with average temperature ranging between max 43.6°C (110.5°F) and min 29.2°C (84.6°F).

Temperature

The warmest month is August, with an average high-temperature of 43.6°C (110.5°F) and an average low-temperature of 29.2°C (84.6°F).

Humidity

The average relative humidity in August is 12%.

Rainfall

Months with rainfall in Riyadh are January through May, August, October through December.

Daylight

In Riyadh, the average length of the day in August is 13h.

Sunshine

In Riyadh, the average sunshine is 10h.

UV index

Months with the highest UV index in Riyadh are April through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 12 in August interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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.

What is the warmest month in Riyadh?

With an average high-temperature of 43.6°C (110.5°F) and an average low-temperature of 29.2°C (84.6°F), August is the warmest month in Riyadh.

What is the temperature in August in Riyadh?

The average high-temperature, in August, is 43.6°C (110.5°F), while the average low-temperature is 29.2°C (84.6°F).

What is the average humidity in August in Riyadh?

The average relative humidity in August in Riyadh, Saudi Arabia, is 12%.

When does it start raining in Riyadh?

August is the first month it rains. Throughout August, in the average 0.2 rainfall days, it receives 0.4mm (0") of precipitation.

How many hours of daylight does Riyadh have in August?

The average length of the day in August in Riyadh is 13h.

How long on average sun shines in August in Riyadh?

In Riyadh, the average sunshine in August is 10h.

When is the highest UV index in Riyadh?

Months with the highest UV index in Riyadh, Saudi Arabia, are April through August, with an average maximum UV index of 12.

How high is the UV index in August in Riyadh?

The average daily maximum UV index in August in Riyadh, Saudi Arabia, is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Riyadh, Saudi Arabia
  • Average high temperature in August: 43.6°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 August: 29.2°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 August - Riyadh, Saudi Arabia
  • Average humidity in August: 12%

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

Average rainfall in August - Riyadh, Saudi Arabia
  • Average rainfall in August: 0.4mm

The wettest month (with the highest rainfall) is April (23.8mm).
Driest months (with the lowest rainfall) are June, July and September (0mm).

Average rainfall days in August - Riyadh, Saudi Arabia
  • Average rainfall days in August: 0.2 days

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

Average daylight in August / Average sunshine in August - Riyadh, Saudi Arabia
  • Average daylight in August: 13h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in August: 10h

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

Average UV index in August - Riyadh, Saudi Arabia
  • Average UV index in August: 12

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).