Cape Town
September
Weather in Cape Town for September 2027
Your guide to Cape Town weather in September - trends and predictions
In general, the average temperature in Cape Town at the beginning of September is 17.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20.1 °C by the end of September.
Cape Town experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 51.8 mm.
Is September a good time to visit Cape Town? check out the best time to travel to Cape Town page.
✨ Is September a good time to visit Cape Town? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
19°/11°
Temperatures
20 km/h
Avg max wind
69 %
Avg humidity
Cape Town Weather September
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Temperatures trend during September in Cape Town
See the weather trend as well as the moving average line
September weather in Cape Town day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 18° /10° | 0.1 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 19° /11° | 1.4 mm | 5 | |
| 3 Sept. | Patchy rain possible | 17° /10° | 1.3 mm | 5 | |
| 4 Sept. |  Light rain | 17° /10° | 2.6 mm | 5 | |
| 5 Sept. | Light rain | 16° /10° | 5.1 mm | 4 | |
| 6 Sept. |  Sunny | 17° /10° | 0 mm | 5 | |
| 7 Sept. | Sunny | 19° /10° | 0 mm | 6 | |
| 8 Sept. |  Partly cloudy | 20° /11° | 0.1 mm | 5 | |
| 9 Sept. | Sunny | 21° /11° | 0.1 mm | 6 | |
| 10 Sept. | Light rain | 19° /11° | 3.7 mm | 5 | |
| 11 Sept. | Light rain | 18° /11° | 3.4 mm | 5 | |
| 12 Sept. | Patchy rain possible | 17° /11° | 1.3 mm | 5 | |
| 13 Sept. | Patchy rain possible | 20° /10° | 1.1 mm | 5 | |
| 14 Sept. | Patchy rain possible | 18° /11° | 1.3 mm | 5 | |
| 15 Sept. | Light rain | 17° /11° | 2.5 mm | 4 | |
| 16 Sept. | Light rain | 16° /11° | 2.7 mm | 5 | |
| 17 Sept. | Partly cloudy | 17° /10° | 0 mm | 6 | |
| 18 Sept. | Partly cloudy | 18° /10° | 0.6 mm | 5 | |
| 19 Sept. | Patchy rain possible | 18° /10° | 0.5 mm | 5 | |
| 20 Sept. | Sunny | 20° /11° | 0.3 mm | 6 | |
| 21 Sept. | Sunny | 21° /11° | 0.7 mm | 6 | |
| 22 Sept. | Patchy rain possible | 22° /12° | 0.9 mm | 5 | |
| 23 Sept. | Patchy rain possible | 19° /13° | 0.2 mm | 5 | |
| 24 Sept. | Light rain | 19° /12° | 7.3 mm | 5 | |
| 25 Sept. | Light rain | 20° /12° | 8.7 mm | 5 | |
| 26 Sept. | Patchy rain possible | 20° /12° | 0.4 mm | 5 | |
| 27 Sept. | Sunny | 20° /12° | 0 mm | 6 | |
| 28 Sept. | Patchy rain possible | 20° /11° | 1.5 mm | 6 | |
| 29 Sept. | Patchy rain possible | 21° /12° | 1.1 mm | 6 | |
| 30 Sept. | Light rain | 22° /12° | 3 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Cape Town in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Cape Town forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cape Town in September - FAQ
What are the expected maximum and minimum temperatures in Cape Town during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cape Town during September?
Moderate rainfall is anticipated in Cape Town during September, with a total of 51.8 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cape Town during September?
The average wind speed in Cape Town during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
Cape Town water temperatures in September
The average water temperature of the Atlantic Ocean near Cape Town in September is 12.7 °C. At the beginning of September temperatures are around 12.7 °C; by the end of the month they stay fairly steady and reach 12.7 °C.
- What is the water temperature in Cape Town in September?
- The average water temperature in Cape Town in September is 12.7 °C.
- Can you swim in Cape Town in September?
- Cold enough that you lose heat fast. A full 4–5 mm wetsuit (plus hood/gloves for comfort) is advisable for anything beyond a brief plunge.
September rainfall patterns in Cape Town
Explore the daily rainfall trends and prepare for Cape Towns September weather 💧
Typically, Cape Town has 6 rainy days in September with a total of 51.8 mm of rainfall.
UV exposure in Cape Town during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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