Western Cape (Cape Town)
September
Weather in Western Cape for September 2026
Your guide to Western Cape weather in September - trends and predictions
In general, the average temperature in Western Cape 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 Western Cape in September is notably wet, with an average of 12 rainy days, and a total of 63.5 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
18
Dry days
12
Rainy days
0
Snow days
18°/10°
Temperatures
21 km/h
Avg max wind
68 %
Avg humidity
Western Cape Weather September
Move between months or click on a day
What’s the Weather Like in Western Cape This September?
Discover the average temperatures and weather trends across Western Cape’s cities this September.
Temperatures trend during September in Western Cape
See the weather trend as well as the moving average line
September weather in Western Cape day by day
Click on a date for more information
| 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 | |
| Next | |||||
Important Notice
Our weather forecast for Western Cape 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 Western Cape forecast closer to your planned date for the most up-to-date weather information.
Change Month
Western Cape in September - FAQ
What are the expected maximum and minimum temperatures in Western Cape 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 Western Cape during September?
Moderate rainfall is anticipated in Western Cape 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 Western Cape during September?
The average wind speed in Western Cape during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Western Cape water temperatures in September
The average water temperature of the Atlantic Ocean near Western Cape 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 Western Cape in September?
- The average water temperature in Western Cape in September is 12.6 °C.
- Can you swim in Western Cape 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 Western Cape
Explore the daily rainfall trends and prepare for Western Capes September weather 💧
UV exposure in Western Cape during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Western Cape
Select a province for an accurate weather forecast
Top locations in Western Cape
Select a location for an accurate weather forecast
More Locations Quick links
More Western Cape weather pages
You are here
Where is Western Cape?Get accurate weather forecasts for Western Cape, located at latitude -33.926 and longitude 18.423. Stay updated with localized weather information tailored for Western Cape.
Found a mistake?
We appreciate your attention to details. Tell us here.