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Climate · Cape Town

Cape Town in September

Mild and mostly dry, as the days lengthen.

Typical weather, averaged over 30 years

September in Cape Town is mild: highs near 67°F, lows near 51°F. Rain falls on about two days a week, and the days lengthen by 45 minutes from the first week to the last.September in Cape Town is mild: highs near 19°C, lows near 11°C. Rain falls on about two days a week, and the days lengthen by 45 minutes from the first week to the last.

High
67°F19°Caverage
Low
51°F11°Caverage
Wet days
2a week · 29% of days
Daylight
11h 57mon average

Is September a good time to visit Cape Town?

A good month, just outside Cape Town's best months, which run from December to March.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 67°F in September, against 65°F to 82°F through the year.Highs near 19°C in September, against 18°C to 28°C through the year.

Chance of a wet day

29% of days in September, against 10% to 37% through the year.

Cloud cover

42% cover in September, against 16% to 44% through the year.

Daylight

11h 57m in September, against 9h 56m to 14h 22m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August65°18°low 49°low 9°2 wet days a weekRain on about two days a week.
  2. September67°19°low 51°low 11°2 wet days a weekRain on about two days a week.
  3. October71°22°low 54°low 12°1 wet day a weekRain on about one day a week.

Where Cape Town sits, in September

Africa/Johannesburg
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:47 AMsets 6:37 PM
Above the sea
20 mlow-lying
Latitude
33.9°Ssouthern hemisphere
Nearest of ours
Franschhoek64 km east

The land around Cape Town, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in South Africa in September

high · low · wet days
See September on the planning mapThe whole year in Cape Town

Typical weather, averaged over 30 years (1995–2024), read 8 km north-east of Cape Town. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.