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Monthly climate in Grootfontein, Namibia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Grootfontein features a hot semi-arid climate (BSh). Temperatures typically range between 15 °C (59 °F) and 26 °C (79 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 734 mm (28.9 inches) and receives 84 rainy days on the 1 mm (0.04 inches) threshold annually. Grootfontein enjoys an average of 3980 hours of sunshine throughout the year, and daylight varies from 10 hours 57 minutes to 13 hours 16 minutes per day.

Monthly average temperatures in Grootfontein, Namibia

The warmest months in Grootfontein are October, November and December, with daily mean temperatures ranging from 25 to 26 °C (78 - 79 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 15 to 18 °C (59 - 65 °F) throughout the day. On average each year, Grootfontein experiences 251 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 Grootfontein. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(99°F)		34°C
(94°F)		36°C
(96°F)		32°C
(90°F)		30°C
(87°F)		28°C
(82°F)		28°C
(82°F)		34°C
(94°F)		35°C
(96°F)		38°C
(101°F)		38°C
(100°F)		37°C
(98°F)
Mean maximum33°C
(92°F)		32°C
(90°F)		30°C
(87°F)		29°C
(85°F)		28°C
(83°F)		26°C
(79°F)		26°C
(80°F)		32°C
(89°F)		35°C
(94°F)		37°C
(99°F)		36°C
(98°F)		35°C
(96°F)
Average high29°C
(85°F)		28°C
(83°F)		28°C
(82°F)		27°C
(80°F)		25°C
(78°F)		23°C
(74°F)		23°C
(74°F)		28°C
(82°F)		32°C
(89°F)		33°C
(92°F)		33°C
(92°F)		32°C
(89°F)
Daily mean24°C
(75°F)		23°C
(73°F)		22°C
(72°F)		20°C
(69°F)		18°C
(65°F)		16°C
(60°F)		15°C
(59°F)		19°C
(67°F)		24°C
(75°F)		26°C
(78°F)		26°C
(79°F)		25°C
(78°F)
Average low19°C
(67°F)		18°C
(65°F)		17°C
(64°F)		15°C
(59°F)		11°C
(53°F)		8°C
(47°F)		7°C
(46°F)		11°C
(52°F)		15°C
(60°F)		18°C
(65°F)		20°C
(68°F)		20°C
(67°F)
Mean minimum17°C
(63°F)		16°C
(61°F)		15°C
(59°F)		11°C
(52°F)		7°C
(44°F)		5°C
(42°F)		4°C
(39°F)		6°C
(42°F)		10°C
(51°F)		13°C
(56°F)		16°C
(61°F)		17°C
(63°F)
Minimum15°C
(60°F)		15°C
(59°F)		13°C
(56°F)		9°C
(49°F)		2°C
(36°F)		3°C
(38°F)		1°C
(34°F)		4°C
(39°F)		7°C
(45°F)		12°C
(53°F)		12°C
(53°F)		15°C
(59°F)

Compare climate in Grootfontein with other places

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

Monthly average precipitation in Grootfontein, Namibia

Grootfontein usually has the most precipitation in January, February and March, with an average of 16 rainy days and 170 mm (6.7 inches) of precipitation per month. The driest months in Grootfontein are June, July and August. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grootfontein. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)190 (7.5)206 (8.1)116 (4.6)50 (2.0)0 (0.0)0 (0.0)0 (0.0)0 (0.0)1 (0.0)21 (0.8)50 (2.0)101 (4.0)
Average precipitation days (≥ 1 mm)15171780000031014

Monthly sunshine hours in Grootfontein, Namibia

The sunniest months in Grootfontein are October, November and December, when the sun shines an average of 11 hours 51 minutes a day. Least sunny months in Grootfontein: January, February and June receive an average of 9 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grootfontein. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours277295330327333319331336336364358368
Mean daily daylight hours13h 8m12h 42m12h 10m11h 37m11h 10m10h 57m11h 3m11h 27m11h 58m12h 32m13h 1m13h 16m

Solar UV radiation in Grootfontein, Namibia

Grootfontein 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 Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Grootfontein UV Index data.

Average daily maximum UV levels by month for Grootfontein. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)171714139881013131516