nomadseason

Monthly climate in Clanwilliam, Western Cape, South Africa

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Clanwilliam features a hot semi-arid climate (BSh).Temperatures typically range between 11 °C (51 °F) and 24 °C (75 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 324 mm (12.8 inches) and receives 46 rainy days on the 1 mm (0.04 inches) threshold annually.Clanwilliam enjoys an average of 4080 hours of sunshine throughout the year, and daylight varies from 10 hours 3 minutes to 14 hours 12 minutes per day.

Monthly average temperatures in Clanwilliam, Western Cape, South Africa §

The warmest months in Clanwilliam are January, February and March, with daily mean temperatures ranging from 21 to 24 °C (71 - 75 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 11 to 12 °C (51 - 54 °F) throughout the day. On average each year, Clanwilliam experiences 165 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Clanwilliam, Western Cape, South Africa.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 39°C
(102°F)		 39°C
(102°F)		 38°C
(101°F)		 36°C
(96°F)		 31°C
(89°F)		 29°C
(84°F)		 27°C
(81°F)		 28°C
(83°F)		 34°C
(93°F)		 38°C
(101°F)		 37°C
(99°F)		 39°C
(102°F)
Mean maximum 38°C
(100°F)		 38°C
(100°F)		 36°C
(96°F)		 33°C
(92°F)		 30°C
(87°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 31°C
(87°F)		 36°C
(97°F)		 34°C
(94°F)		 36°C
(97°F)
Average high 31°C
(87°F)		 31°C
(89°F)		 29°C
(84°F)		 26°C
(79°F)		 22°C
(72°F)		 18°C
(65°F)		 18°C
(64°F)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(77°F)		 26°C
(79°F)		 28°C
(82°F)
Daily mean 23°C
(74°F)		 24°C
(75°F)		 21°C
(71°F)		 19°C
(66°F)		 15°C
(60°F)		 12°C
(54°F)		 11°C
(52°F)		 11°C
(51°F)		 14°C
(57°F)		 17°C
(63°F)		 19°C
(67°F)		 21°C
(70°F)
Average low 16°C
(62°F)		 17°C
(63°F)		 15°C
(60°F)		 13°C
(55°F)		 10°C
(50°F)		 7°C
(45°F)		 6°C
(43°F)		 5°C
(42°F)		 8°C
(46°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(58°F)
Mean minimum 10°C
(51°F)		 12°C
(53°F)		 10°C
(50°F)		 6°C
(44°F)		 5°C
(40°F)		 2°C
(36°F)		 -0°C
(32°F)		 0°C
(33°F)		 2°C
(36°F)		 4°C
(39°F)		 6°C
(44°F)		 9°C
(49°F)
Minimum 9°C
(48°F)		 10°C
(50°F)		 8°C
(47°F)		 5°C
(40°F)		 3°C
(38°F)		 -1°C
(31°F)		 -2°C
(29°F)		 -2°C
(29°F)		 0°C
(33°F)		 2°C
(36°F)		 4°C
(39°F)		 6°C
(44°F)

Compare climate in Clanwilliam with other places

Compare temperature, precipitation, sunshine, UV index in Clanwilliam, Western Cape, South Africa with other places around the world.

Monthly average precipitation in Clanwilliam, Western Cape, South Africa §

Clanwilliam usually has the most precipitation in June, July and August, with an average of 7 rainy days and 55 mm (2.2 inches) of precipitation per month.The driest months in Clanwilliam are January, February and April. On average, 10 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Clanwilliam, Western Cape, South Africa.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) 12 (0.5) 4 (0.2) 18 (0.7) 14 (0.5) 32 (1.2) 66 (2.6) 63 (2.5) 37 (1.4) 19 (0.7) 21 (0.8) 23 (0.9) 16 (0.6)
Average precipitation days (≥ 1 mm) 2 1 2 3 4 8 6 7 4 4 3 2

Monthly sunshine hours in Clanwilliam, Western Cape, South Africa §

The sunniest months in Clanwilliam are October, November and December, when the sun shines an average of 12 hours 52 minutes a day.Least sunny months in Clanwilliam: May, June and July receive an average of 9 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Clanwilliam, Western Cape, South Africa.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 338 358 361 319 298 278 294 316 329 374 390 420
Mean daily daylight hours 13h 58m 13h 12m 12h 14m 11h 15m 10h 27m 10h 3m 10h 15m 10h 58m 11h 54m 12h 53m 13h 45m 14h 12m

Solar UV radiation in Clanwilliam, Western Cape, South Africa §

Clanwilliam experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure.May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Clanwilliam UV Index data.

Average daily maximum UV levels by month for Clanwilliam, Western Cape, South Africa.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) 15 14 12 9 6 4 4 6 9 12 13 15