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Monthly climate in As Sulayyil, Riyadh Region, Saudi Arabia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification As Sulayyil features a hot desert climate (BWh).Temperatures typically range between 18 °C (65 °F) and 38 °C (100 °F) through the year, but rarely can drop to 4 °C (39 °F) or can rise to as high as 47 °C (117 °F).The average annual precipitation amounts to about 21 mm (0.8 inches) and receives 2 rainy days on the 1 mm (0.04 inches) threshold annually.As Sulayyil enjoys an average of 3933 hours of sunshine throughout the year, and daylight varies from 10 hours 54 minutes to 13 hours 20 minutes per day.

Monthly average temperatures in As Sulayyil, Riyadh Region, Saudi Arabia §

The warmest months in As Sulayyil are June, July and August, with daily mean temperatures ranging from 37 to 38 °C (98 - 100 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 18 to 21 °C (65 - 69 °F) throughout the day. On average each year, As Sulayyil experiences 291 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in As Sulayyil, Riyadh Region, Saudi Arabia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 32°C
(90°F)		 37°C
(98°F)		 40°C
(105°F)		 41°C
(106°F)		 44°C
(111°F)		 46°C
(115°F)		 47°C
(117°F)		 46°C
(116°F)		 45°C
(113°F)		 40°C
(105°F)		 36°C
(96°F)		 33°C
(92°F)
Mean maximum 31°C
(88°F)		 34°C
(94°F)		 40°C
(104°F)		 41°C
(105°F)		 43°C
(110°F)		 45°C
(113°F)		 47°C
(116°F)		 46°C
(114°F)		 44°C
(111°F)		 39°C
(103°F)		 34°C
(94°F)		 31°C
(88°F)
Average high 25°C
(77°F)		 27°C
(81°F)		 32°C
(90°F)		 36°C
(98°F)		 40°C
(104°F)		 43°C
(110°F)		 44°C
(111°F)		 44°C
(111°F)		 41°C
(106°F)		 36°C
(96°F)		 30°C
(86°F)		 25°C
(78°F)
Daily mean 18°C
(65°F)		 21°C
(69°F)		 26°C
(78°F)		 30°C
(86°F)		 34°C
(93°F)		 37°C
(98°F)		 38°C
(100°F)		 38°C
(100°F)		 34°C
(94°F)		 29°C
(84°F)		 24°C
(75°F)		 19°C
(66°F)
Average low 11°C
(53°F)		 14°C
(57°F)		 18°C
(65°F)		 23°C
(73°F)		 27°C
(81°F)		 29°C
(84°F)		 31°C
(88°F)		 31°C
(87°F)		 26°C
(80°F)		 22°C
(71°F)		 17°C
(63°F)		 13°C
(55°F)
Mean minimum 6°C
(44°F)		 8°C
(46°F)		 13°C
(56°F)		 18°C
(64°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 22°C
(72°F)		 18°C
(65°F)		 13°C
(56°F)		 8°C
(46°F)
Minimum 4°C
(40°F)		 5°C
(42°F)		 12°C
(55°F)		 16°C
(62°F)		 20°C
(68°F)		 24°C
(76°F)		 24°C
(75°F)		 26°C
(80°F)		 19°C
(67°F)		 16°C
(60°F)		 11°C
(53°F)		 4°C
(39°F)

Compare climate in As Sulayyil with other places

Compare temperature, precipitation, sunshine, UV index in As Sulayyil, Riyadh Region, Saudi Arabia with other places around the world.

Monthly average precipitation in As Sulayyil, Riyadh Region, Saudi Arabia §

As Sulayyil usually has the most precipitation in February, April and July, with an average of 0 rainy days and 4 mm (0.2 inches) of precipitation per month.The driest months in As Sulayyil are June, August and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in As Sulayyil, Riyadh Region, Saudi Arabia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 1 (0.0) 5 (0.2) 3 (0.1) 4 (0.1) 0 (0.0) 0 (0.0) 5 (0.2) 0 (0.0) 0 (0.0) 0 (0.0) 2 (0.1) 1 (0.0)
Average precipitation days (≥ 1 mm) 0 1 0 1 0 0 0 0 0 0 0 0

Monthly sunshine hours in As Sulayyil, Riyadh Region, Saudi Arabia §

The sunniest months in As Sulayyil are May, June and July, when the sun shines an average of 11 hours 37 minutes a day.Least sunny months in As Sulayyil: January, February and November receive an average of 9 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in As Sulayyil, Riyadh Region, Saudi Arabia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 255 291 335 337 359 355 355 349 335 336 309 313
Mean daily daylight hours 11h 1m 11h 27m 12h 1m 12h 36m 13h 5m 13h 20m 13h 12m 12h 47m 12h 13m 11h 39m 11h 9m 10h 54m

Solar UV radiation in As Sulayyil, Riyadh Region, Saudi Arabia §

As Sulayyil experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 12 - 13, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly As Sulayyil UV Index data.

Average daily maximum UV levels by month for As Sulayyil, Riyadh Region, Saudi Arabia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 8 10 12 12 13 12 12 11 11 10 8 8