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South Africa weather

Weather in Stellenbosch for September 2025

Your guide to Stellenbosch weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Stellenbosch at the beginning of September is 18.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.3 °C by the end of September.

    • Rain 🌧️

  • Stellenbosch experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 32.9 mm.

    • More

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Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/7°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Stellenbosch Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
20°
2
Sunny
29°
3
Overcast
21°
4
Patchy rain possible
16°
5
Patchy rain possible
13°
6
Sunny
17°
7
Sunny
16°
8
Moderate rain at times
13°
9
Sunny
16°
10
Sunny
19°
11
Sunny
22°
12
Patchy rain possible
18°
13
Patchy rain possible
17°
14
Cloudy
19°
15
Cloudy
18°
16
Sunny
19°
17
Partly cloudy
17°
18
Heavy rain at times
12°
19
Patchy rain possible
14°
20
Sunny
18°
21
Sunny
20°
22
Sunny
24°
23
Sunny
28°
24
Overcast
21°
25
Moderate rain at times
18°
26
Cloudy
19°
27
Partly cloudy
18°
28
Moderate or heavy rain shower
16°
29
Moderate or heavy rain shower
11°
30
Light rain shower
11°

Temperatures trend during September in Stellenbosch

See the weather trend as well as the moving average line

September weather in Stellenbosch day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 20° /7° 0 mm 7
2 Sept. Sunny
Sunny
 29° /8° 0 mm 8
3 Sept. Overcast
Overcast
 21° /12° 0.9 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 0.6 mm 5
5 Sept. Patchy rain possible
Patchy rain possible
 13° /6° 0.3 mm 4
6 Sept. Sunny
Sunny
 17° /4° 0 mm 6
7 Sept. Sunny
Sunny
 16° /5° 0 mm 6
8 Sept. Moderate rain at times
Moderate rain at times
 13° /6° 2.3 mm 4
9 Sept. Sunny
Sunny
 16° /5° 0 mm 6
10 Sept. Sunny
Sunny
 19° /4° 0 mm 6
11 Sept. Sunny
Sunny
 22° /7° 0 mm 7
12 Sept. Patchy rain possible
Patchy rain possible
 18° /7° 0.2 mm 5
13 Sept. Patchy rain possible
Patchy rain possible
 17° /6° 0.1 mm 5
14 Sept. Cloudy
Cloudy
 19° /6° 0 mm 5
15 Sept. Cloudy
Cloudy
 18° /9° 0.1 mm 5
16 Sept. Sunny
Sunny
 19° /7° 0 mm 6
17 Sept. Partly cloudy
Partly cloudy
 17° /6° 0 mm 6
18 Sept. Heavy rain at times
Heavy rain at times
 12° /5° 3.5 mm 4
19 Sept. Patchy rain possible
Patchy rain possible
 14° /6° 0.7 mm 4
20 Sept. Sunny
Sunny
 18° /6° 0 mm 6
21 Sept. Sunny
Sunny
 20° /5° 0 mm 7
22 Sept. Sunny
Sunny
 24° /9° 0 mm 7
23 Sept. Sunny
Sunny
 28° /12° 0 mm 8
24 Sept. Overcast
Overcast
 21° /10° 0 mm 6
25 Sept. Moderate rain at times
Moderate rain at times
 18° /8° 1.4 mm 5
26 Sept. Cloudy
Cloudy
 19° /8° 0 mm 5
27 Sept. Partly cloudy
Partly cloudy
 18° /8° 0 mm 6
28 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /7° 10.2 mm 5
29 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 11° /6° 4.5 mm 4
30 Sept. Light rain shower
Light rain shower
 11° /4° 8.1 mm 4
Next
Important Notice
Our weather forecast for Stellenbosch 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 Stellenbosch forecast closer to your planned date for the most up-to-date weather information.
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Stellenbosch in September - FAQ

What are the expected maximum and minimum temperatures in Stellenbosch during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Stellenbosch during September?
In September, Stellenbosch can expect light to moderate rainfall, totaling 32.9 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Stellenbosch during September?
The average wind speed in Stellenbosch during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Stellenbosch

Explore the daily rainfall trends and prepare for Stellenboschs September weather 💧

UV exposure in Stellenbosch during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Stellenbosch?

Get accurate weather forecasts for Stellenbosch, located at latitude -33.935 and longitude 18.867. Stay updated with localized weather information tailored for Stellenbosch.

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