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Weather & Climate in Port Saint John’s, South Africa
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Port Saint John’s enjoys a temperate climate with an average annual temperature of 67°F (20°C). Winters average 72°F in January while summers reach 62°F in July / relatively mild seasonal variation. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 42.6 inches. The city sits at an elevation of 23 feet.
Temperature
72°F Jan (22°C)
62°F Jul (17°C)
| Annual Average | 67.3°F |
| 25% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 23 ft (7 m) |
| Area | 603.6 sq mi (1,563.4 km²) |
| Population Density | 10/sq mi |
| Coordinates | -31.6229°N, 29.5448°W |
| Timezone | Africa/Johannesburg |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jul 26, 1991 | 10 km NNW of Port Shepstone, South Africa | M3.8 | 137 km | 5 km |
| Jan 27, 1994 | 52 km WSW of Kokstad, South Africa | M3.4 | 110 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) | 4.5 in | |
| February | 73°F (23°C) | 5.1 in | Warmest |
| March | 72°F (22°C) | 5.2 in | Wettest |
| April | 69°F (21°C) | 3.6 in | |
| May | 66°F (19°C) | 2.1 in | |
| June | 63°F (17°C) | 1.1 in | Driest |
| July | 62°F (17°C) | 1.6 in | Coldest |
| August | 63°F (17°C) | 2.1 in | |
| September | 64°F (18°C) | 3.4 in | |
| October | 65°F (19°C) | 4.5 in | |
| November | 68°F (20°C) | 5.1 in | |
| December | 71°F (21°C) | 4.4 in |
Port Saint John’s has a seasonal temperature swing of 11°F / from 62°F in July to 73°F in February. Total annual precipitation is 42.6 inches, with March being the wettest month (5.2") and June the driest (1.1").