SeasonMapStellenbosch (Winelands) weather in September
South Africa
September in Stellenbosch: nice, a little rain, with clean air — an excellent time to visit.
#6 of 12 months in Stellenbosch · #458 of 1383 destinations to visit in September · comfort 86/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Stellenbosch in September
Other months in Stellenbosch
Stellenbosch's forum calls November one of the best months in the Western Cape — green and lush after the winter rains, the first genuinely summer-warm stretch of the year. Regulars flag it as more changeable than February, with more chance of rain, days that can reach 40°C alongside cooler ones, and a jumper worth having for evenings even though days need no warm layers.
Add your own note from Stellenbosch's card on the map.
Stellenbosch climate normals — September
| Daytime high | 21°C / 70°F | 😎 nice |
|---|---|---|
| Nighttime low | 9°C / 47°F | |
| Feels like (high) | 20°C / 68°F | |
| Sea temperature | 15°C / 58°F | 🥶 cold sea |
| Rainfall | 56 mm / 2.2 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 11.9 h | |
| Wind | 20 km/h / 12 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Stellenbosch in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyTerm 3–4 (spring) break in South Africa(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Stellenbosch's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherStellenbosch's best weather comes in April, October and November — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
Nearby, and something's on
Within 300 km of Stellenbosch — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Stellenbosch?
Stellenbosch in September — FAQ
- Is September a good time to visit Stellenbosch?
- September in Stellenbosch: nice, a little rain, with clean air — an excellent time to visit. It ranks #6 of 12 months for Stellenbosch on SeasonMap's comfort score (86/100).
- What is the weather like in Stellenbosch in September?
- In September, Stellenbosch averages a daily high of 21°C and a low of 8.6°C, with about 56.1 mm of rain over roughly 7.7 rainy days.
- What is the air quality in Stellenbosch in September?
- Stellenbosch has a mean US Air Quality Index of about 50 in September.
Other months in Stellenbosch
Compare Stellenbosch in September
Warmer or cooler than Stellenbosch in September
Similar destinations in Southern Africa — September
Within 300 km: Cape Town's Southern right whales around 1 Jun – 30 Nov, and Hermanus' Southern right whales around 1 Jun – 30 Nov.