Monthly climate guide
Cape Town weather in September
Expect mild weather in Cape Town in September: afternoons reach about 16°C (62°F), while nights drop to around 14°C (56°F). Around 41 mm of rain falls over the month (fairly dry), and skies are mostly sunny. Daytime highs are about the same as August and about the same as October.
What stands out in September
- Seasonally, September counts as early spring in Cape Town — the seasons are reversed south of the equator.
- There's little difference between day and night (around 3°C).
- Just 90 km apart, but Cape Town runs about 2°C cooler than Hermanus this month.
- Comfortable temperatures make it easy to walk between V&A Waterfront and Table Mountain.
Avg high
16°C
62°F
Avg low
14°C
56°F
Rainfall
41 mm
fairly dry
Humidity
79%
relative
Sky
34%
cloud · mostly sunny
Cape Town weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 22°C / 71°F | 19°C / 65°F | 14 mm | 79% | 19% |
| February | 22°C / 71°F | 19°C / 65°F | 9 mm | 79% | 18% |
| March | 21°C / 69°F | 18°C / 64°F | 20 mm | 81% | 23% |
| April | 19°C / 67°F | 16°C / 61°F | 34 mm | 79% | 25% |
| May | 18°C / 65°F | 15°C / 59°F | 45 mm | 81% | 35% |
| June | 16°C / 62°F | 14°C / 57°F | 121 mm | 79% | 37% |
| July | 16°C / 60°F | 13°C / 56°F | 91 mm | 80% | 31% |
| August | 16°C / 60°F | 13°C / 55°F | 81 mm | 80% | 35% |
| September | 16°C / 62°F | 14°C / 56°F | 41 mm | 79% | 34% |
| October | 18°C / 64°F | 15°C / 58°F | 29 mm | 80% | 28% |
| November | 19°C / 66°F | 16°C / 60°F | 27 mm | 78% | 27% |
| December | 21°C / 69°F | 17°C / 63°F | 11 mm | 78% | 22% |
What to pack for September
- A warm sweater or fleece for layering
- A mid-weight jacket
- A small travel umbrella, just in case
- Sunglasses
Is September a good time to visit Cape Town?
Our Cape Town guide recommends: November to March, the Southern Hemisphere summer — outside this window, winter (June–August) brings more rain and wind.
Book the Table Mountain cableway or a hike for early in your trip if possible — it closes in high wind, so a flexible schedule helps.
Best time to visit Cape Town →Other South Africa cities in September
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Cape Town weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/south-africa/cape-town/september
<a href="https://weathercompare.eu/weather/south-africa/cape-town/september">Cape Town weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/south-africa/cape-town" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Cape Town weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/south-africa/cape-town/september">Cape Town weather in September</a> – WeatherCompare</p>
Cape Town in September: quick answers
Is September a good time to visit Cape Town?
September is a reasonable time for Cape Town: highs around 16°C and about 41 mm of rain, though not one of the three best months.
How warm is Cape Town in September?
Average highs are about 16°C (62°F) and average lows about 14°C (56°F), based on 10 years of daily data.
Does it rain a lot in Cape Town in September?
Cape Town typically gets around 41 mm of rain in September — fairly dry.
When is the best time to visit Cape Town?
November to March, the Southern Hemisphere summer — outside this window, winter (June–August) brings more rain and wind.
Figures are long-term averages for the area around Cape Town (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.