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Weather in Stellenbosch for September 2026

Your guide to Stellenbosch weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Stellenbosch at the beginning of September is 20 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.6 °C by the end of September.

    • Rain 🌧️

  • Stellenbosch experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 32.9 mm.

    • More

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Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/7°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Stellenbosch Weather September

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

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
 21° /7° 0 mm 7
2 Sept. Sunny
Sunny
 26° /8° 0 mm 8
3 Sept. Overcast
Overcast
 20° /10° 0.4 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 19° /9° 0.3 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 17° /8° 0.3 mm 5
6 Sept. Sunny
Sunny
 18° /6° 0 mm 6
7 Sept. Sunny
Sunny
 19° /7° 0 mm 6
8 Sept. Moderate rain at times
Moderate rain at times
 19° /7° 1.1 mm 6
9 Sept. Sunny
Sunny
 20° /9° 0 mm 7
10 Sept. Sunny
Sunny
 22° /8° 0 mm 7
11 Sept. Sunny
Sunny
 21° /9° 0 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
 20° /8° 0.1 mm 6
13 Sept. Patchy rain possible
Patchy rain possible
 19° /7° 0.1 mm 6
14 Sept. Cloudy
Cloudy
 20° /7° 0 mm 6
15 Sept. Cloudy
Cloudy
 18° /8° 1.3 mm 5
16 Sept. Sunny
Sunny
 17° /7° 2.7 mm 5
17 Sept. Partly cloudy
Partly cloudy
 16° /6° 0 mm 6
18 Sept. Heavy rain at times
Heavy rain at times
 15° /5° 1.8 mm 5
19 Sept. Patchy rain possible
Patchy rain possible
 19° /6° 0.3 mm 5
20 Sept. Sunny
Sunny
 20° /7° 0 mm 7
21 Sept. Sunny
Sunny
 20° /6° 0.6 mm 6
22 Sept. Sunny
Sunny
 20° /9° 1.4 mm 6
23 Sept. Sunny
Sunny
 23° /9° 0.1 mm 7
24 Sept. Overcast
Overcast
 20° /8° 0 mm 6
25 Sept. Moderate rain at times
Moderate rain at times
 20° /6° 0.7 mm 6
26 Sept. Cloudy
Cloudy
 23° /9° 0 mm 7
27 Sept. Partly cloudy
Partly cloudy
 22° /9° 0 mm 7
28 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /9° 5.1 mm 6
29 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /8° 2.2 mm 6
30 Sept. Light rain shower
Light rain shower
 21° /7° 4.1 mm 6
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 6 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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