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. 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) |
Geography
| Elevation | 23 ft (7 m) |
| Area | 603.6 sq mi (1,563.4 km²) |
| Population Density | 10/sq mi |
| Coordinates | 31.6229°S, 29.5448°E |
| 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").