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Monthly climate in Thornhill, Eastern Cape, South Africa

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Thornhill features a oceanic climate (Cfb).Temperatures typically range between 15 °C (59 °F) and 21 °C (70 °F) through the year, but rarely can drop to 7 °C (45 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 456 mm (18.0 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually.Thornhill enjoys an average of 3980 hours of sunshine throughout the year, and daylight varies from 9 hours 54 minutes to 14 hours 21 minutes per day.

Monthly average temperatures in Thornhill, Eastern Cape, South Africa §

The warmest months in Thornhill are January, February and March, with daily mean temperatures ranging from 20 to 21 °C (69 - 70 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 15 to 16 °C (59 - 61 °F) throughout the day. On average each year, Thornhill experiences 45 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 Thornhill, Eastern 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 31°C
(89°F)		 32°C
(90°F)		 33°C
(92°F)		 32°C
(90°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)		 29°C
(84°F)		 34°C
(93°F)		 30°C
(87°F)		 30°C
(85°F)		 31°C
(88°F)
Mean maximum 29°C
(85°F)		 29°C
(85°F)		 31°C
(88°F)		 29°C
(84°F)		 28°C
(83°F)		 25°C
(78°F)		 27°C
(82°F)		 26°C
(79°F)		 28°C
(83°F)		 27°C
(81°F)		 27°C
(80°F)		 27°C
(81°F)
Average high 24°C
(76°F)		 24°C
(75°F)		 23°C
(75°F)		 22°C
(71°F)		 21°C
(70°F)		 21°C
(69°F)		 20°C
(68°F)		 18°C
(65°F)		 19°C
(67°F)		 20°C
(69°F)		 21°C
(70°F)		 22°C
(72°F)
Daily mean 21°C
(70°F)		 21°C
(70°F)		 20°C
(69°F)		 18°C
(65°F)		 17°C
(63°F)		 16°C
(62°F)		 16°C
(60°F)		 15°C
(59°F)		 16°C
(61°F)		 17°C
(63°F)		 18°C
(65°F)		 20°C
(67°F)
Average low 19°C
(66°F)		 19°C
(66°F)		 18°C
(64°F)		 16°C
(61°F)		 14°C
(58°F)		 13°C
(55°F)		 12°C
(54°F)		 12°C
(53°F)		 13°C
(56°F)		 14°C
(57°F)		 15°C
(60°F)		 17°C
(63°F)
Mean minimum 16°C
(60°F)		 15°C
(59°F)		 15°C
(59°F)		 13°C
(55°F)		 11°C
(51°F)		 10°C
(50°F)		 8°C
(47°F)		 9°C
(48°F)		 10°C
(50°F)		 10°C
(51°F)		 12°C
(54°F)		 14°C
(57°F)
Minimum 15°C
(59°F)		 13°C
(56°F)		 14°C
(57°F)		 12°C
(54°F)		 9°C
(49°F)		 8°C
(46°F)		 8°C
(46°F)		 7°C
(45°F)		 8°C
(47°F)		 10°C
(50°F)		 10°C
(51°F)		 12°C
(55°F)

Compare climate in Thornhill with other places

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

Monthly average precipitation in Thornhill, Eastern Cape, South Africa §

Thornhill usually has the most precipitation in February, August and December, with an average of 8 rainy days and 50 mm (2.0 inches) of precipitation per month.The driest months in Thornhill are January, April and June. On average, 25 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Thornhill, Eastern 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) 28 (1.1) 48 (1.9) 43 (1.7) 28 (1.1) 31 (1.2) 19 (0.7) 33 (1.3) 53 (2.1) 42 (1.6) 38 (1.5) 47 (1.9) 48 (1.9)
Average precipitation days (≥ 1 mm) 7 9 7 5 6 5 5 8 7 8 9 9

Monthly sunshine hours in Thornhill, Eastern Cape, South Africa §

The sunniest months in Thornhill are October, November and December, when the sun shines an average of 12 hours 28 minutes a day.Least sunny months in Thornhill: May, June and July receive an average of 9 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Thornhill, Eastern 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 326 344 352 304 295 277 295 310 324 368 376 403
Mean daily daylight hours 14h 6m 13h 17m 12h 14m 11h 12m 10h 20m 9h 54m 10h 8m 10h 53m 11h 53m 12h 56m 13h 52m 14h 21m

Solar UV radiation in Thornhill, Eastern Cape, South Africa §

Thornhill experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Thornhill UV Index data.

Average daily maximum UV levels by month for Thornhill, Eastern 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) 14 13 11 8 5 4 4 6 8 11 12 14