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Monthly climate in Aioun, Mauritania

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Aioun features a hot desert climate (BWh). Temperatures typically range between 22 °C (72 °F) and 37 °C (98 °F) through the year, but rarely can drop to 9 °C (49 °F) or can rise to as high as 46 °C (115 °F). The average annual precipitation amounts to about 112 mm (4.4 inches) and receives 18 rainy days on the 1 mm (0.04 inches) threshold annually. Aioun enjoys an average of 3808 hours of sunshine throughout the year, and daylight varies from 11 hours 8 minutes to 13 hours 5 minutes per day.

Monthly average temperatures in Aioun, Mauritania

The warmest months in Aioun are May, June and July, with daily mean temperatures ranging from 34 to 37 °C (94 - 98 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 22 to 26 °C (72 - 78 °F) throughout the day. On average each year, Aioun experiences 325 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 Aioun. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(101°F)		40°C
(104°F)		43°C
(109°F)		44°C
(112°F)		46°C
(114°F)		46°C
(115°F)		46°C
(115°F)		44°C
(112°F)		44°C
(112°F)		43°C
(109°F)		40°C
(104°F)		39°C
(103°F)
Mean maximum34°C
(94°F)		38°C
(101°F)		41°C
(105°F)		43°C
(110°F)		45°C
(113°F)		45°C
(113°F)		44°C
(112°F)		43°C
(109°F)		43°C
(110°F)		42°C
(108°F)		39°C
(102°F)		36°C
(97°F)
Average high29°C
(85°F)		32°C
(91°F)		36°C
(96°F)		39°C
(103°F)		42°C
(108°F)		42°C
(108°F)		39°C
(103°F)		37°C
(99°F)		38°C
(101°F)		39°C
(103°F)		35°C
(96°F)		31°C
(88°F)
Daily mean22°C
(72°F)		26°C
(78°F)		29°C
(84°F)		33°C
(91°F)		36°C
(97°F)		37°C
(98°F)		34°C
(94°F)		32°C
(90°F)		33°C
(91°F)		33°C
(92°F)		29°C
(84°F)		24°C
(76°F)
Average low16°C
(60°F)		19°C
(66°F)		21°C
(71°F)		26°C
(78°F)		30°C
(86°F)		31°C
(88°F)		30°C
(85°F)		28°C
(82°F)		28°C
(82°F)		27°C
(80°F)		22°C
(72°F)		18°C
(64°F)
Mean minimum12°C
(54°F)		14°C
(57°F)		16°C
(60°F)		22°C
(71°F)		25°C
(78°F)		28°C
(82°F)		27°C
(80°F)		24°C
(76°F)		25°C
(77°F)		22°C
(72°F)		17°C
(63°F)		14°C
(57°F)
Minimum9°C
(49°F)		11°C
(52°F)		11°C
(53°F)		18°C
(64°F)		22°C
(71°F)		25°C
(77°F)		26°C
(79°F)		24°C
(75°F)		23°C
(74°F)		20°C
(68°F)		15°C
(59°F)		11°C
(53°F)

Compare climate in Aioun with other places

Compare temperature, precipitation, sunshine, UV index in Aioun, Mauritania with other places around the world.

Monthly average precipitation in Aioun, Mauritania

Aioun usually has the most precipitation in July, August and September, with an average of 5 rainy days and 33 mm (1.3 inches) of precipitation per month. The driest months in Aioun are January, November and December. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Aioun. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)0 (0.0)0 (0.0)0 (0.0)1 (0.0)2 (0.1)6 (0.2)12 (0.5)59 (2.3)28 (1.1)4 (0.2)0 (0.0)0 (0.0)
Average precipitation days (≥ 1 mm)000001385100

Monthly sunshine hours in Aioun, Mauritania

The sunniest months in Aioun are April, May and July, when the sun shines an average of 11 hours 13 minutes a day. Least sunny months in Aioun: January, February and November receive an average of 9 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Aioun. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours248285335337349334345335320314297302
Mean daily daylight hours11h 14m11h 35m12h 2m12h 30m12h 54m13h 5m12h 59m12h 38m12h 11m11h 44m11h 20m11h 8m

Solar UV radiation in Aioun, Mauritania

Aioun experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. January, February and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Aioun UV Index data.

Average daily maximum UV levels by month for Aioun. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)9101214131213141311108