Riyadh
Saudi Arabia
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Riyadh, Saudi Arabia

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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
  • The average high temperature in May: 39.4°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).

  • The average low temperature in May: 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).

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  • The average humidity in May: 17%

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

  • The average rainfall in May: 4.9mm

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

  • The average rainfall days in May: 3.3 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).

  • The average daylight in May: 13h

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

  • The average sunshine in May: 9.3h

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

  • The average UV index in May: 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).

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