South Africa in September: Weather, Crowds & What to Expect
Climate Map for September
Average temperature across South Africa in September.
City Weather in September
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Johannesburg | 22° | 8° | 30 mm | very high | Cool |
| Cape Town | 19° | 11° | 48 mm | high | Cool |
| Durban | 23° | 15° | 73 mm | high | Mild |
| Pretoria | 26° | 11° | 21 mm | very high | Mild |
| Soweto | 24° | 8° | 26 mm | very high | Cool |
| Gqeberha | 21° | 11° | 45 mm | high | Cool |
| Soshanguve | 28° | 11° | 16 mm | very high | Mild |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Western Cape (Cape Town & Cape Peninsula)
A fresher, sunnier rhythm arrives in September as spring advances: skies clear more often, wildflowers start to colour the nearby mountains, and temperatures climb into the high teens to low 20s°C. Table Mountain flowers and Kirstenbosch botanical displays are at their best; mornings can still be crisp, so bring a sweater for dawn hikes. Tourist numbers begin to rise late in the month, especially at vineyards and coastal trails.
Southern Cape & Garden Route (Knysna, Plettenberg Bay, Oudtshoorn)
Spring proper starts to show in September with warming days and flowering shrubs across the coastal hills, turning routes between Plettenberg Bay and Knysna more photogenic. Adventure operators resume full schedules for sea-kayaking, snorkelling and canopy tours; book active excursions ahead for weekends. The weather is pleasantly changeable, so pack a mix of sun and light rain protection to stay comfortable all day.
Eastern Cape & Wild Coast (Gqeberha/Port Elizabeth to Coffee Bay)
September can be pleasantly warm and sunny with lower rainfall, making it a fine month for multi-day hikes on the Wild Coast or for launches to local islands and estuary tours. Accessibility to remote homesteads improves as tracks dry, but some backroads may still be rough; a 4x4 is recommended for serious backcountry travel. Birding is rewarding now as migrants pass through the estuaries.
KwaZulu‑Natal & the Drakensberg (Durban, Pietermaritzburg, uKhahlamba/Drakensberg)
September becomes noticeably warmer and greener as pre-summer rains begin to return to the escarpment; wildflowers can appear on sheltered slopes. Coastal humidity rises slowly but beach days are frequent and watersports ramp up in Durban. If you’re aiming for the Drakensberg, late September gives good access before the heavy summer storms, though afternoon cloud build-up begins to be more common.
Highveld & Gauteng (Johannesburg, Pretoria, Magaliesberg, Pilanesberg)
September often feels springlike, with comfortable days and the smell of growth returning to parks and nature reserves. Occasional pre-summer thunderstorms can begin to appear late in the month, but most days are excellent for walking, museums and rooftop terraces in Johannesburg. Expect pollen levels to rise - allergy sufferers should plan accordingly.
Lowveld & Kruger Region (Mbombela/Nelspruit, Hazyview, Kruger National Park)
September becomes hotter and drier as spring builds; daytime temperatures climb and the air dries out, increasing the chance of controlled burns in reserve management to keep grass growth in check. Early mating behavior among some species can make wildlife viewing dynamic, but midday heat reduces animal activity, so schedule drives at dawn and dusk. Pack sunscreen and stay hydrated on full-day reserves visits.
Northern Cape & Kalahari (Kimberley, Upington, Namaqualand, Kgalagadi)
September is the peak month for Namaqualand’s wildflower season in many years with carpets of daisies and other bulbs after good winter rains; this annual spectacle draws photographers and local tourism, so book accommodation early. The Kalahari warms noticeably by day, making sand dune activities and game drives comfortable; mornings still require a fleece. Check local park websites for current flower conditions and road accessibility.