What to expect in Cape Town in September
September is a mixed month in Cape Town. You get 19° / 9°, but manageable crowds at the big attractions. Worth it for the right traveller.
Cape Town weather in September
Typical conditions in Cape Town during September, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 19°C 66°F |
|---|---|
| Average low | 9°C 48°F |
| Rainfall | Moderate 45/100 |
| Total rainfall | 40 mm1.6 in |
| Rainy days | 10 |
| Sea temperature | 15°C 59°F |
| Daylight | 11 h 52 min |
| How it feels | Mild — layers weather |
Average highs sit around 19°C with lows near 9°C. Rainfall is moderate; the odd shower is likely.
Crowds & demand
Crowd levels are Low for Cape Town — plenty of space at the main sights.
Prices & value
This month counts as low season: some of the best deals of the year.
What to pack
Layers you can shed: 19°C by day and about 9°C after dark is a two-jacket kind of month.
What it costs
This is one of the cheaper months to visit Cape Town. Flights and accommodation sit near their yearly floor, and you can usually book late without being punished for it. Compared with the most expensive month of the year, you are looking at roughly 59% less.
Who this month suits
- Anyone travelling on a budget
- People who would rather have space than perfect conditions
- Visitors who want to catch a festival
Events & what’s on
Look out for Whale Watching Season while you’re there.
- Whale Watching Season — Southern right whales calve close to shore along False Bay.
Cape Town in September compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| July | 17° / 7° | Low | $ | 68 |
| August | 18° / 8° | Low | $ | 68 |
| September · This month | 19° / 9° | Low | $ | 67 |
| October | 21° / 11° | Moderate | $$ | 65 |
| November | 23° / 13° | Moderate | $$ | 62 |
These months score higher for Cape Town on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in September
If the destination is negotiable but the month is not, these places are at their best in September.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
