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Monthly climate in Mariental, Namibia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mariental features a hot desert climate (BWh). Temperatures typically range between 15 °C (59 °F) and 29 °C (84 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 197 mm (7.7 inches) and receives 23 rainy days on the 1 mm (0.04 inches) threshold annually. Mariental enjoys an average of 4153 hours of sunshine throughout the year, and daylight varies from 10 hours 37 minutes to 13 hours 37 minutes per day.

Monthly average temperatures in Mariental, Namibia

The warmest months in Mariental are January, February and December, with daily mean temperatures ranging from 27 to 29 °C (82 - 84 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 15 to 16 °C (59 - 62 °F) throughout the day. On average each year, Mariental experiences 279 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 Mariental. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum40°C
(105°F)		39°C
(102°F)		39°C
(103°F)		35°C
(95°F)		34°C
(93°F)		30°C
(85°F)		29°C
(85°F)		32°C
(91°F)		38°C
(100°F)		39°C
(102°F)		40°C
(104°F)		40°C
(104°F)
Mean maximum38°C
(101°F)		37°C
(100°F)		36°C
(98°F)		34°C
(94°F)		31°C
(88°F)		28°C
(82°F)		28°C
(83°F)		31°C
(88°F)		36°C
(98°F)		37°C
(99°F)		39°C
(102°F)		39°C
(102°F)
Average high35°C
(95°F)		34°C
(93°F)		33°C
(92°F)		30°C
(87°F)		28°C
(82°F)		24°C
(76°F)		24°C
(75°F)		25°C
(78°F)		30°C
(87°F)		32°C
(90°F)		35°C
(95°F)		35°C
(95°F)
Daily mean29°C
(84°F)		27°C
(82°F)		27°C
(80°F)		23°C
(74°F)		20°C
(67°F)		16°C
(61°F)		15°C
(59°F)		16°C
(62°F)		22°C
(71°F)		24°C
(76°F)		27°C
(81°F)		28°C
(83°F)
Average low22°C
(72°F)		22°C
(71°F)		20°C
(69°F)		17°C
(62°F)		12°C
(54°F)		8°C
(46°F)		7°C
(45°F)		8°C
(47°F)		13°C
(56°F)		16°C
(62°F)		19°C
(67°F)		21°C
(69°F)
Mean minimum18°C
(64°F)		17°C
(64°F)		16°C
(61°F)		12°C
(54°F)		6°C
(43°F)		3°C
(38°F)		2°C
(35°F)		3°C
(37°F)		6°C
(43°F)		9°C
(49°F)		13°C
(56°F)		15°C
(59°F)
Minimum17°C
(63°F)		15°C
(60°F)		14°C
(58°F)		10°C
(51°F)		3°C
(37°F)		1°C
(35°F)		-0°C
(32°F)		0°C
(33°F)		3°C
(37°F)		7°C
(44°F)		10°C
(50°F)		11°C
(52°F)

Compare climate in Mariental with other places

Compare temperature, precipitation, sunshine, UV index in Mariental, Namibia with other places around the world.

Monthly average precipitation in Mariental, Namibia

Mariental usually has the most precipitation in January, February and December, with an average of 5 rainy days and 47 mm (1.9 inches) of precipitation per month. The driest months in Mariental are May, June and August. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mariental. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)46 (1.8)60 (2.3)27 (1.1)16 (0.6)1 (0.0)0 (0.0)2 (0.1)0 (0.0)1 (0.0)6 (0.2)2 (0.1)36 (1.4)
Average precipitation days (≥ 1 mm)573400000103

Monthly sunshine hours in Mariental, Namibia

The sunniest months in Mariental are October, November and December, when the sun shines an average of 12 hours 37 minutes a day. Least sunny months in Mariental: January, June and July receive an average of 10 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mariental. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours320346360327325307323336343373384404
Mean daily daylight hours13h 27m12h 54m12h 11m11h 28m10h 53m10h 37m10h 45m11h 16m11h 57m12h 40m13h 18m13h 37m

Solar UV radiation in Mariental, Namibia

Mariental experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 16 - 17, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / 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 Mariental UV Index data.

Average daily maximum UV levels by month for Mariental. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)16171411867911141516