May weather forecast
Riyadh, Saudi Arabia

May is the doorway to summer with a sharp rise in temperatures reaching a scorching 39.4°C (102.9°F). The city starts to endure the true heat of Saudi Arabia's unforgiving sun. The extended hours of sunshine blend with the amplified UV index of 12, intensifying the overall heat. However, humidity levels droop significantly, ushering in the city's dry season. The onset of summer also signals a drastic reduction in rainfall, with precipitation recordings barely reaching 5mm (0.2").

Temperature

In Riyadh, the average high-temperature in May increases from a hot 33.4°C (92.1°F) in April to a torrid 39.4°C (102.9°F). During May, Riyadh notes a substantial drop from the daytime peak to an average minimum temperature of 25.9°C (78.6°F).

Humidity

The average relative humidity in May in Riyadh is 17%.

Rainfall

May is the last month it rains in Riyadh. During 3.3 rainfall days, in May, Riyadh aggregates 5mm (0.2") of precipitation. In Riyadh, during the entire year, the rain falls for 44.8 days and collects up to 93mm (3.66") of precipitation.

Daylight

In Riyadh, Saudi Arabia, the average length of the day in May is 13h and 21min.
On the first day of May in Riyadh, sunrise is at 05:17 and sunset at 18:23. On the last day of the month, sunrise is at 05:04 and sunset at 18:38 +03.

Sunshine

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

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 12 during May morphs into the following directions:
Ensure every crucial precaution is taken. Individuals with light skin could experience burns in under 5 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Post an outdoor workout or swimming, a broad-spectrum SPF 30+ sunscreen should be applied generously and frequently.