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South Africa weather in September 2025
Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in South Africa in September. Check more long-term weather averages for South Africa in September before you book your next holiday to South Africa in 2025/2026.
- 18°C max day temperature
18 - 7 hours of sunshine per day
- 11 days with some rainfall
11 - 9°C min night temperature
9 - 12 hours of daylight per day
12 - No heat & humidity
0 - 96 mm of monthly rainfall
96 - 6 (High) UV index
6 - 15°C sea temperature
15
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The September weather guide for South Africa (Cape Town) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top South Africa destinations
Below are average maximum temperatures at popular countries, regions and places in South Africa in September. Select a holiday destination to see more weather parameters.
All South Africa destinations
- Bergville
- Bloemfontein
- Calvinia
- Cape Town
- Durban
- East London
- Estcourt
- Graaf-reinet
- Johannesburg
- Kimberley
- Knysna
- Ladysmith
- Leataba Rest Camp
- Mthatha
- Musina
- Okiep
- Oudtshoorn
- Pietermaritzburg
- Polokwane
- Port Elizabeth
- Port St Johns
- Pretoria
- Skukuza Restcamp
- St Lucia
- Stellenbosch
- Sun City
- Underberg
- Upington
Metric (°C / mm) | Imperial (°F / inches)
More about South Africa
How hot is it in South Africa in September?
Daytime temperatures usually reach 18°C in Cape Town, South Africa in September, falling to 9°C at night.
How sunny is it in South Africa in September?
There are normally 7 hours of bright sunshine each day in Cape Town, South Africa in September - that's 62% of daylight hours.
How warm is the sea around South Africa in September?
The average sea temperature around Cape Town, South Africa in September is 15°C.
Does it rain in South Africa in September?
There are usually 11 days with some rain in Cape Town, South Africa in September and the average monthly rainfall is 96mm.
South Africa September sunrise & sunset times
Browse the sunrise and sunset times for South Africa in September 2025. Select a month to view South Africa sunrise and sunset times for the next 12 months. The South Africa sunrise and sunset times shown below are for Cape Town.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 07:04 | 18:28 |
| Monday, 15th September 2025 | 06:45 | 18:38 |
| Tuesday, 30th September 2025 | 06:24 | 18:49 |
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