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Weather & Climate in Glen Mill, South Africa
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Glen Mill enjoys a temperate climate with an average annual temperature of 65°F (19°C). Winters average 72°F in January while summers reach 59°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 45.5 inches. The city sits at an elevation of 820 feet.
Temperature
72°F Jan (22°C)
59°F Jul (15°C)
| Annual Average | 65.3°F |
| 21% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 59°F (15°C) |
| Sunny Days | 288 days/yr |
Geography
| Elevation | 820 ft (250 m) |
| Area | 503.9 sq mi (1,305.0 km²) |
| Population Density | 4/sq mi |
| Coordinates | -29.2937°N, 31.1397°W |
| Timezone | Africa/Johannesburg |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Jun 16, 2015 | 19 km ESE of Sundumbili, South Africa | M4.3 | 46 km | 15 km |
| Jan 9, 1994 | 9 km SE of Howick, South Africa | M3.7 | 86 km | 5 km |
| Feb 6, 2016 | South Africa | M3.7 | 49 km | 15 km |
| Oct 11, 1993 | 45 km ESE of Ekuvukeni, South Africa | M3.3 | 97 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 72°F (22°C) | 5.2 in | Wettest |
| February | 73°F (23°C) | 4.7 in | Warmest |
| March | 72°F (22°C) | 4.7 in | |
| April | 68°F (20°C) | 2.5 in | |
| May | 63°F (17°C) | 1.5 in | |
| June | 59°F (15°C) | 0.8 in | Driest |
| July | 59°F (15°C) | 1.1 in | Coldest |
| August | 62°F (17°C) | 1.5 in | |
| September | 65°F (18°C) | 2.4 in | |
| October | 67°F (19°C) | 3.7 in | |
| November | 69°F (21°C) | 4.4 in | |
| December | 72°F (22°C) | 5.1 in |
Glen Mill has a seasonal temperature swing of 15°F / from 59°F in July to 73°F in February. Total annual precipitation is 37.6 inches, with January being the wettest month (5.2") and June the driest (0.8").