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Weather & Climate in Heilbron, South Africa
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Heilbron enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 70°F in January while summers reach 46°F in July / relatively mild seasonal variation. The area gets 288 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 26.3 inches (drier than the 38-inch national average). The city sits at an elevation of 5,049 feet.
Temperature
70°F Jan (21°C)
46°F Jul (8°C)
| Annual Average | 60.4°F |
| 12% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 46°F (8°C) |
| Sunny Days | 288 days/yr |
Geography
| Elevation | 5,049 ft (1,539 m) |
| Area | 3,524.2 sq mi (9,127.5 km²) |
| Population Density | 9/sq mi |
| Coordinates | -27.2812°N, 27.9709°W |
| Timezone | Africa/Johannesburg |
Precipitation & Snow
Air Quality
Earthquake History
1,099 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Oct 30, 1994 | 6 km S of Welkom, South Africa | M5.6 | 147 km | 5 km |
| Aug 5, 2014 | 3 km ESE of Orkney, South Africa | M5.4 | 129 km | 5 km |
| Jun 6, 1992 | 5 km SSE of Welkom, South Africa | M5.3 | 145 km | 10 km |
| Apr 3, 2017 | 7 km SSE of Stilfontein, South Africa | M5.2 | 123 km | 5 km |
| Feb 10, 1997 | 5 km SSE of Orkney, South Africa | M5.2 | 129 km | 5 km |
| Nov 3, 1991 | 5 km SE of Klerksdorp, South Africa | M5.1 | 133 km | 5 km |
| Mar 16, 2009 | 8 km ENE of Orkney, South Africa | M5.0 | 126 km | 2 km |
| Dec 1, 1991 | 2 km S of Klerksdorp, South Africa | M5.0 | 137 km | 10 km |
| Sep 26, 1990 | 4 km S of Welkom, South Africa | M5.0 | 147 km | 5 km |
| Jun 14, 2010 | 8 km NNW of Fochville, South Africa | M5.0 | 108 km | 2 km |
| Mar 9, 2005 | 7 km SSE of Stilfontein, South Africa | M5.0 | 124 km | 5 km |
| May 27, 2002 | 4 km ENE of Orkney, South Africa | M5.0 | 129 km | 5 km |
| Jul 21, 1997 | 4 km W of Klerksdorp, South Africa | M5.0 | 142 km | 5 km |
| Nov 25, 1995 | South Africa | M4.9 | 130 km | 13 km |
| Dec 11, 1997 | 7 km SSW of Klerksdorp, South Africa | M4.9 | 139 km | 5 km |
| Jul 29, 2000 | 13 km SSW of Allanridge, South Africa | M4.9 | 150 km | 10 km |
| Jun 15, 2014 | 8 km E of Orkney, South Africa | M4.9 | 124 km | 5 km |
| Jul 13, 1998 | 14 km ENE of Welkom, South Africa | M4.9 | 131 km | 10 km |
| Mar 22, 2019 | 8 km WNW of Virginia, South Africa | M4.9 | 146 km | 5 km |
| Feb 17, 2005 | 13 km WSW of Klerksdorp, South Africa | M4.9 | 147 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 4.5 in | Warmest, Wettest |
| February | 69°F (21°C) | 3.3 in | |
| March | 66°F (19°C) | 3.1 in | |
| April | 60°F (16°C) | 1.8 in | |
| May | 53°F (12°C) | 0.6 in | |
| June | 47°F (8°C) | 0.3 in | Driest |
| July | 46°F (8°C) | 0.3 in | Coldest |
| August | 53°F (11°C) | 0.6 in | |
| September | 59°F (15°C) | 1.1 in | |
| October | 65°F (18°C) | 3.0 in | |
| November | 67°F (19°C) | 3.9 in | |
| December | 69°F (21°C) | 4.1 in |
Heilbron has a seasonal temperature swing of 24°F / from 46°F in July to 70°F in January. Total annual precipitation is 26.3 inches, with January being the wettest month (4.5") and June the driest (0.3").