City of Cape Town (Cape Town)
September
Weather in City of Cape Town for September 2026
Your guide to City of Cape Town weather in September - trends and predictions
In general, the average temperature in City of Cape Town at the beginning of September is 17.3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19.9 °C by the end of September.
The climate of City 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
City of Cape Town Weather September
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Temperatures trend during September in City of Cape Town
See the weather trend as well as the moving average line
September weather in City of Cape Town day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 18° /9° | 0.1 mm | 5 | |
| 2 Sept. |  Sunny | 20° /10° | 1.7 mm | 6 | |
| 3 Sept. |  Patchy rain possible | 17° /10° | 1.2 mm | 5 | |
| 4 Sept. |  Partly cloudy | 17° /9° | 3.1 mm | 5 | |
| 5 Sept. | Patchy rain possible | 15° /10° | 6.1 mm | 4 | |
| 6 Sept. | Patchy rain possible | 16° /9° | 0 mm | 5 | |
| 7 Sept. | Sunny | 18° /8° | 0 mm | 6 | |
| 8 Sept. | Partly cloudy | 19° /9° | 0.1 mm | 5 | |
| 9 Sept. | Sunny | 22° /10° | 0.1 mm | 6 | |
| 10 Sept. | Sunny | 19° /10° | 4.4 mm | 6 | |
| 11 Sept. | Sunny | 18° /9° | 4.1 mm | 5 | |
| 12 Sept. | Sunny | 17° /9° | 0.4 mm | 5 | |
| 13 Sept. | Sunny | 19° /9° | 0 mm | 6 | |
| 14 Sept. | Overcast | 19° /10° | 0 mm | 5 | |
| 15 Sept. | Overcast | 17° /11° | 0.5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 17° /10° | 0.9 mm | 5 | |
| 17 Sept. | Partly cloudy | 17° /9° | 0 mm | 6 | |
| 18 Sept. | Partly cloudy | 17° /9° | 0.7 mm | 5 | |
| 19 Sept. | Patchy rain possible | 17° /10° | 0.5 mm | 5 | |
| 20 Sept. | Sunny | 19° /10° | 0.4 mm | 6 | |
| 21 Sept. | Sunny | 20° /9° | 0.8 mm | 6 | |
| 22 Sept. | Partly cloudy | 20° /10° | 0.9 mm | 6 | |
| 23 Sept. | Patchy rain possible | 19° /12° | 0.1 mm | 6 | |
| 24 Sept. | Overcast | 19° /11° | 8.8 mm | 5 | |
| 25 Sept. | Overcast | 19° /10° | 10.3 mm | 5 | |
| 26 Sept. | Partly cloudy | 20° /11° | 0.3 mm | 6 | |
| 27 Sept. | Sunny | 20° /11° | 0 mm | 6 | |
| 28 Sept. | Sunny | 20° /11° | 1.8 mm | 6 | |
| 29 Sept. | Sunny | 20° /12° | 1.3 mm | 6 | |
| 30 Sept. | Light rain shower | 21° /11° | 3.6 mm | 6 | |
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Important Notice
Our weather forecast for City of 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 City of Cape Town forecast closer to your planned date for the most up-to-date weather information.
Change Month
City of Cape Town in September - FAQ
What are the expected maximum and minimum temperatures in City of 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 City of Cape Town during September?
Moderate rainfall is anticipated in City of 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 City of Cape Town during September?
The average wind speed in City of Cape Town during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
City of Cape Town water temperatures in September
The average water temperature of the Atlantic Ocean near City of Cape Town in September is 12.6 °C. At the beginning of September temperatures are around 12.6 °C; by the end of the month they stay fairly steady and reach 12.7 °C.
- What is the water temperature in City of Cape Town in September?
- The average water temperature in City of Cape Town in September is 12.6 °C.
- Can you swim in City of 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 City of Cape Town
Explore the daily rainfall trends and prepare for City of Cape Towns September weather 💧
UV exposure in City of Cape Town during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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