May weather forecast
Riyadh, Saudi Arabia

The last month of the spring, May, is a very hot month in Riyadh, Saudi Arabia, with temperature in the range of an average high of 39.4°C (102.9°F) and an average low of 25.9°C (78.6°F).

Temperature

In May, the average high-temperature increases from a tropical 33.4°C (92.1°F) in April to a torrid 39.4°C (102.9°F). In Riyadh, Saudi Arabia, the average low-temperature is 25.9°C (78.6°F).

Humidity

In Riyadh, the average relative humidity in May is 17%.

Rainfall

May is the last month it rains. During 3.3 rainfall days, Riyadh aggregates 5mm (0.2") of precipitation. Throughout the year, there are 44.8 rainfall days, and 93mm (3.66") of precipitation is accumulated.

Daylight

The average length of the day in May is 13h and 21min.
On the first day of the month, sunrise is at 05:17 and sunset at 18:22. On the last day of May, sunrise is at 05:04 and sunset at 18:37 +03.

Sunshine

In Riyadh, the average sunshine in May is 9.3h.

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 12 in May transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.