Knysna
September
Weather in Knysna for September 2026
Your guide to Knysna weather in September - trends and predictions
So far, September 2026 in Knysna is slightly warmer than the historical average by 1 °C.
Expect cooler weather in the next days in Knysna with the forecast suggesting a temperature of 18.3 °C, lower than the historical average.
In general, the average temperature in Knysna at the beginning of September is 19 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 17.1 °C by the end of September.
Knysna experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 36 mm.
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Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
19°/12°
Temperatures
21 km/h
Avg max wind
74 %
Avg humidity
Knysna Weather September
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Temperatures trend during September in Knysna
See the weather trend as well as the moving average line
September weather in Knysna day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 19° /9° | 0 mm | 5 | |
| 2 Sept. |  Overcast | 21° /11° | 0 mm | 4 | |
| 3 Sept. |  Patchy rain possible | 16° /11° | 14.9 mm | 3 | |
| 4 Sept. | Patchy rain possible | 17° /10° | 1.9 mm | 3 | |
| 5 Sept. | Overcast | 18° /11° | 0.1 mm | 5 | |
| 6 Sept. |  Sunny | 19° /12° | 0.3 mm | 5 | |
| 7 Sept. | Overcast | 23° /12° | 0.2 mm | 5 | |
| 8 Sept. | Light rain shower | 25° /16° | 0.6 mm | 4 | |
| 9 Sept. | Sunny | 23° /13° | 0 mm | 5 | |
| 10 Sept. | Sunny | 20° /12° | 0 mm | 5 | |
| 11 Sept. | Patchy rain possible | 19° /12° | 0.5 mm | 4 | |
| 12 Sept. | Light rain shower | 21° /14° | 8.7 mm | 4.9 | |
| 13 Sept. | Light rain shower | 19° /14° | 7.7 mm | 2.1 | |
| 14 Sept. | Overcast | 21° /15° | 6.3 mm | 3 | |
| 15 Sept. | Sunny | 22° /13° | 0.4 mm | 7.1 | |
| 16 Sept. | Light rain shower | 15° /11° | 17.9 mm | 4 | |
| 17 Sept. | Patchy rain possible | 16° /11° | 3.7 mm | 5 | |
| 18 Sept. | Patchy rain possible | 15° /9° | 5.2 mm | 4 | |
| 19 Sept. | Patchy rain possible | 15° /8° | 0.8 mm | 5 | |
| 20 Sept. | Sunny | 18° /9° | 0 mm | 6 | |
| 21 Sept. | Sunny | 23° /11° | 0 mm | 6 | |
| 22 Sept. | Overcast | 29° /13° | 0 mm | 8 | |
| 23 Sept. | Patchy rain possible | 15° /12° | 1 mm | 5 | |
| 24 Sept. | Light rain shower | 12° /8° | 8.8 mm | 5 | |
| 25 Sept. | Patchy rain possible | 15° /8° | 1.7 mm | 5 | |
| 26 Sept. | Overcast | 18° /12° | 3 mm | 6 | |
| 27 Sept. |  Cloudy | 19° /12° | 0 mm | 6 | |
| 28 Sept. | Overcast | 19° /13° | 4 mm | 6 | |
| 29 Sept. | Overcast | 17° /11° | 3.2 mm | 5 | |
| 30 Sept. | Light rain shower | 20° /10° | 4.6 mm | 5 | |
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Important Notice
Our weather forecast for Knysna 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 Knysna forecast closer to your planned date for the most up-to-date weather information.
Change Month
Knysna in September - FAQ
What are the expected maximum and minimum temperatures in Knysna during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Knysna during September?
In September, Knysna can expect light to moderate rainfall, totaling 36 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Knysna during September?
The average wind speed in Knysna during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Knysna
Explore the daily rainfall trends and prepare for Knysnas September weather 💧
Typically, Knysna has 10 rainy days in September with a total of 36 mm of rainfall.
UV exposure in Knysna during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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