May weather forecastRiyadh, Saudi Arabia
May
Weather in May
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Riyadh, Saudi Arabia
- 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).
- 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).
Average humidity in May
Riyadh, Saudi Arabia
- Average humidity in May: 17%
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 May
Riyadh, Saudi Arabia
- Average rainfall in May: 4.9mm
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 May
Riyadh, Saudi Arabia
- Average rainfall days in May: 3.3 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 May /
Average sunshine in May
Riyadh, Saudi Arabia
- Average daylight in May: 13h and 18min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in May: 9h and 18min
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 May
Riyadh, Saudi Arabia
- Average UV index in May: 12
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).
