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Weather & Climate in Onverwacht, South Africa
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Onverwacht enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 74°F in January while summers reach 54°F in July / relatively mild seasonal variation. The area gets 345 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 19.5 inches (drier than the 38-inch national average). The city sits at an elevation of 4,400 feet.
Temperature
74°F Jan (24°C)
54°F Jul (12°C)
| Annual Average | 66.8°F |
| 24% above US avg | |
| January Average | 74°F (24°C) |
| July Average | 54°F (12°C) |
| Sunny Days | 345 days/yr |
Geography
| Elevation | 4,400 ft (1,341 m) |
| Area | 3,281.7 sq mi (8,499.7 km²) |
| Population Density | 1/sq mi |
| Coordinates | -25.6023°N, 28.5990°W |
| Timezone | Africa/Johannesburg |
Precipitation & Snow
Air Quality
Earthquake History
433 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Jun 14, 2010 | 8 km NNW of Fochville, South Africa | M5.0 | 144 km | 2 km |
| Aug 6, 2000 | 8 km SSW of Westonaria, South Africa | M4.9 | 132 km | 5 km |
| Mar 1, 2019 | 6 km WSW of Soweto, South Africa | M4.9 | 110 km | 5 km |
| Jun 11, 2023 | Gauteng, South Africa | M4.9 | 92 km | 5 km |
| Dec 5, 1998 | 9 km NNE of Fochville, South Africa | M4.9 | 140 km | 10 km |
| Dec 2, 2013 | 33 km SE of Modimolle, South Africa | M4.8 | 75 km | 5 km |
| Mar 7, 2019 | 6 km E of Fochville, South Africa | M4.8 | 143 km | 5 km |
| Jul 13, 2000 | 9 km SW of Westonaria, South Africa | M4.7 | 133 km | 10 km |
| Mar 13, 2022 | 14 km W of eMbalenhle, South Africa | M4.7 | 106 km | 5 km |
| Oct 9, 2009 | 7 km NW of Fochville, South Africa | M4.7 | 149 km | 2 km |
| Sep 25, 1997 | 1 km SE of Carletonville, South Africa | M4.7 | 147 km | 5 km |
| Oct 28, 1995 | 10 km W of Westonaria, South Africa | M4.7 | 133 km | 5 km |
| Apr 6, 1993 | 3 km NW of Carletonville, South Africa | M4.7 | 147 km | 5 km |
| Jul 12, 2002 | 14 km NNW of eMbalenhle, South Africa | M4.7 | 99 km | 5 km |
| Aug 16, 2012 | 6 km ESE of Westonaria, South Africa | M4.7 | 122 km | 5 km |
| Aug 31, 2014 | 10 km NE of Fochville, South Africa | M4.6 | 137 km | 5 km |
| Jan 9, 2015 | 11 km NNE of Fochville, South Africa | M4.6 | 137 km | 5 km |
| Jun 11, 2015 | 6 km N of Fochville, South Africa | M4.6 | 144 km | 5 km |
| Mar 28, 2018 | 6 km E of Fochville, South Africa | M4.6 | 144 km | 5 km |
| Mar 24, 2016 | 16 km ESE of Fochville, South Africa | M4.6 | 139 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (24°C) | 4.8 in | Warmest, Wettest |
| February | 71°F (22°C) | 3.5 in | |
| March | 69°F (20°C) | 3.2 in | |
| April | 64°F (18°C) | 1.6 in | |
| May | 58°F (15°C) | 0.5 in | |
| June | 53°F (12°C) | 0.2 in | Coldest |
| July | 54°F (12°C) | 0.2 in | Driest |
| August | 58°F (15°C) | 0.2 in | |
| September | 65°F (18°C) | 0.8 in | |
| October | 68°F (20°C) | 2.6 in | |
| November | 69°F (21°C) | 4.3 in | |
| December | 70°F (21°C) | 4.5 in |
Onverwacht has a seasonal temperature swing of 21°F / from 53°F in June to 74°F in January. Total annual precipitation is 26.3 inches, with January being the wettest month (4.8") and July the driest (0.2").