Cape Town
September
Weather in Cape Town for September 2025
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 16.7 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19.1 °C by the end of September.
The climate of Cape Town in September is notably wet, with an average of 12 rainy days, and a total of 63.5 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
18°/10°
Temperatures
21 km/h
Avg max wind
68 %
Avg humidity
Cape Town in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  19° | 3  17° | 4  16° | 5 14° | 6 16° | 7 18° |
| 8 18° | 9 21° | 10 18° | 11 17° | 12  17° | 13 19° | 14 19° |
| 15 17° | 16 17° | 17 18° | 18 18° | 19 16° | 20 18° | 21 20° |
| 22 21° | 23 19° | 24 19° | 25 19° | 26 19° | 27 20° | 28 20° |
| 29 19° | 30 18° |
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Temperatures trend during September in Cape Town
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Overcast | 17° /9° | 0.1 mm | 5 | |
| 2 Sept. | Sunny | 19° /9° | 2.2 mm | 6 | |
| 3 Sept. | Patchy rain possible | 17° /10° | 1.5 mm | 5 | |
| 4 Sept. | Partly cloudy | 16° /9° | 3.9 mm | 5 | |
| 5 Sept. | Patchy rain possible | 14° /9° | 7.6 mm | 4 | |
| 6 Sept. | Patchy rain possible | 16° /8° | 0 mm | 5 | |
| 7 Sept. | Sunny | 18° /8° | 0 mm | 6 | |
| 8 Sept. | Partly cloudy | 18° /9° | 0.1 mm | 5 | |
| 9 Sept. | Sunny | 21° /9° | 0.1 mm | 6 | |
| 10 Sept. | Sunny | 18° /9° | 5.6 mm | 6 | |
| 11 Sept. | Sunny | 17° /9° | 5.1 mm | 5 | |
| 12 Sept. | Moderate rain at times | 17° /9° | 0.6 mm | 5 | |
| 13 Sept. | Sunny | 19° /9° | 0 mm | 6 | |
| 14 Sept. | Patchy rain possible | 19° /10° | 0 mm | 5 | |
| 15 Sept. | Overcast | 17° /11° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 17° /10° | 0.4 mm | 5 | |
| 17 Sept. | Partly cloudy | 18° /10° | 0 mm | 6 | |
| 18 Sept. | Overcast | 18° /9° | 0.9 mm | 5 | |
| 19 Sept. | Patchy rain possible | 16° /10° | 0.7 mm | 5 | |
| 20 Sept. | Sunny | 18° /10° | 0.5 mm | 6 | |
| 21 Sept. | Sunny | 20° /9° | 1 mm | 6 | |
| 22 Sept. | Partly cloudy | 21° /10° | 0.6 mm | 6 | |
| 23 Sept. | Partly cloudy | 19° /12° | 0.1 mm | 6 | |
| 24 Sept. | Overcast | 19° /11° | 11 mm | 5 | |
| 25 Sept. | Overcast | 19° /11° | 12.8 mm | 5 | |
| 26 Sept. | Partly cloudy | 19° /11° | 0.3 mm | 6 | |
| 27 Sept. | Sunny | 20° /11° | 0 mm | 6 | |
| 28 Sept. | Partly cloudy | 20° /10° | 2.2 mm | 6 | |
| 29 Sept. | Sunny | 19° /12° | 1.6 mm | 6 | |
| 30 Sept. | Light rain shower | 18° /11° | 4.5 mm | 5 | |
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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.
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 18° and cooler nights around 10°. 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 63.5 mm spread over approximately 12 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 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cape Town
Explore the daily rainfall trends and prepare for Cape Towns September weather 💧
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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