The temperatures in Hermanus in September are usually low and can range between 12°C and 17°C.
The wather in Hermanus in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Hermanus in September 2025.
If you’re planning to visit Hermanus in the near future, we highly recommend that you review the 14 day weather forecast for Hermanus before you arrive.
Temperatures
17° / 12°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
44
mm
Sun Hours
10.6
Hrs
