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Weather & Climate in Williston, South Africa
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Williston enjoys a temperate climate with an average annual temperature of 62°F (16°C). Winters average 75°F in January while summers reach 47°F in July / relatively mild seasonal variation. The area gets 323 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 7.1 inches (drier than the 38-inch national average). The city sits at an elevation of 3,537 feet.
Temperature
75°F Jan (24°C)
47°F Jul (8°C)
| Annual Average | 61.6°F |
| 14% above US avg | |
| January Average | 75°F (24°C) |
| July Average | 47°F (8°C) |
| Sunny Days | 323 days/yr |
Geography
| Elevation | 3,537 ft (1,078 m) |
| Area | 38.2 sq mi (98.9 km²) |
| Population Density | 88/sq mi |
| Coordinates | -31.3405°N, 20.9154°W |
| Timezone | Africa/Johannesburg |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Dec 31, 1994 | 50 km ENE of Brandvlei, South Africa | M4.5 | 112 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 75°F (24°C) | 0.6 in | Warmest |
| February | 75°F (24°C) | 0.9 in | |
| March | 70°F (21°C) | 1.2 in | Wettest |
| April | 62°F (16°C) | 0.8 in | |
| May | 54°F (12°C) | 0.4 in | |
| June | 48°F (9°C) | 0.5 in | |
| July | 47°F (8°C) | 0.4 in | Coldest |
| August | 51°F (10°C) | 0.4 in | |
| September | 56°F (13°C) | 0.3 in | Driest |
| October | 62°F (17°C) | 0.5 in | |
| November | 67°F (20°C) | 0.4 in | |
| December | 72°F (22°C) | 0.6 in |
Williston has a seasonal temperature swing of 28°F / from 47°F in July to 75°F in January. Total annual precipitation is 7.1 inches, with March being the wettest month (1.2") and September the driest (0.3").