Hermanus
September
Weather in Hermanus for September 2025
Your guide to Hermanus weather in September - trends and predictions
In general, the average temperature in Hermanus at the beginning of September is 15.3 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 15 °C by the end of September.
The climate of Hermanus in September is notably wet, with an average of 11 rainy days, and a total of 39.9 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
15°/11°
Temperatures
30 km/h
Avg max wind
74 %
Avg humidity
Hermanus Weather September
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  21° | 3 16° | 4  14° | 5 12° | 6 14° | 7 14° |
| 8  13° | 9 14° | 10 16° | 11 17° | 12 15° | 13  15° | 14 16° |
| 15 15° | 16 15° | 17  15° | 18 15° | 19 13° | 20 16° | 21 17° |
| 22 19° | 23 20° | 24 18° | 25 16° | 26 15° | 27 15° | 28 15° |
| 29 13° | 30 13° |
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Temperatures trend during September in Hermanus
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 16° /11° | 0 mm | 6 | |
| 2 Sept. | Sunny | 21° /11° | 0 mm | 7 | |
| 3 Sept. | Partly cloudy | 16° /13° | 0 mm | 6 | |
| 4 Sept. | Patchy rain possible | 14° /12° | 0.3 mm | 4 | |
| 5 Sept. | Patchy rain possible | 12° /10° | 1.4 mm | 4 | |
| 6 Sept. | Patchy rain possible | 14° /9° | 0.2 mm | 4 | |
| 7 Sept. | Partly cloudy | 14° /9° | 0.1 mm | 5 | |
| 8 Sept. | Patchy light drizzle | 13° /11° | 1.9 mm | 4 | |
| 9 Sept. | Patchy rain possible | 14° /9° | 0.3 mm | 4 | |
| 10 Sept. | Sunny | 16° /10° | 0 mm | 6 | |
| 11 Sept. | Sunny | 17° /12° | 0.1 mm | 6 | |
| 12 Sept. | Light drizzle | 15° /12° | 1.3 mm | 5 | |
| 13 Sept. | Overcast | 15° /12° | 0 mm | 5 | |
| 14 Sept. | Overcast | 16° /11° | 0.1 mm | 5 | |
| 15 Sept. | Light drizzle | 15° /12° | 0.5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 15° /11° | 0.1 mm | 5 | |
| 17 Sept. | Cloudy | 15° /10° | 0 mm | 5 | |
| 18 Sept. | Light rain shower | 15° /11° | 3.5 mm | 5 | |
| 19 Sept. | Light rain shower | 13° /10° | 4.2 mm | 4 | |
| 20 Sept. | Patchy rain possible | 16° /10° | 0 mm | 5 | |
| 21 Sept. | Sunny | 17° /11° | 0 mm | 6 | |
| 22 Sept. | Sunny | 19° /13° | 0 mm | 6 | |
| 23 Sept. | Sunny | 20° /13° | 0 mm | 7 | |
| 24 Sept. | Overcast | 18° /14° | 0 mm | 5 | |
| 25 Sept. | Patchy rain possible | 16° /13° | 0.1 mm | 5 | |
| 26 Sept. | Patchy rain possible | 15° /12° | 0.3 mm | 5 | |
| 27 Sept. | Patchy rain possible | 15° /12° | 0.2 mm | 5 | |
| 28 Sept. | Light rain shower | 15° /12° | 9.1 mm | 5 | |
| 29 Sept. | Light rain shower | 13° /11° | 6.9 mm | 4 | |
| 30 Sept. | Light rain shower | 13° /11° | 9.3 mm | 4 | |
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Important Notice
Our weather forecast for Hermanus 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 Hermanus forecast closer to your planned date for the most up-to-date weather information.
Hermanus in September - FAQ
What are the expected maximum and minimum temperatures in Hermanus during September?
During September, expect a variety of temperatures with highs around 15° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hermanus during September?
In September, Hermanus can expect light to moderate rainfall, totaling 39.9 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Hermanus during September?
The average wind speed in Hermanus during September is 30 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hermanus
Explore the daily rainfall trends and prepare for Hermanuss September weather 💧
UV exposure in Hermanus during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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