Verdict: Excellent month
Cape Town Weather in September
September hits the sweet spot in Cape Town — highs around 18°C (64°F), ideal for a full day on foot. Rain is occasional — about 8 wet days in a typical year. Overall, September is one of the best months of the year to be in Cape Town.
Average high
18°C / 64°F
Average low
11°C / 52°F
Rain days
~8
Precipitation
56 mm
What to pack for Cape Town in September
- Layers — t-shirts under a light jacket or sweater
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Cape Town: Jan (26°C / 79°F) · Coolest: Jul (16°C / 61°F) · Wettest: Aug (~12 rain days)
26°
17°
Jan
26°
17°
Feb
24°
16°
Mar
22°
14°
Apr
19°
12°
May
18°
11°
Jun
16°
10°
Jul
16°
10°
Aug
18°
11°
Sep
22°
13°
Oct
23°
15°
Nov
24°
16°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)