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South AfricaThe weather in September in Hermanus
It's pleasantly warm in September in Hermanus with an average temperature of 20°C. Temperatures this month range from a low of 19°C to a high of 22°C. At night, you can expect temperatures between 9°C and 12°C.
Looking for great weather? September is a good time to be in Hermanus. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Hermanus, South Africa. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 36°C in 2019, Hermanus reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 13°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 16°C.
Rainfall amount
In September, there is an average of 47 mm of precipitation, spread over 9 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Daily weather in September for Hermanus
Click on any day in September to get detailed info about the usual weather on that day in Hermanus. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Hermanus | New York | |
|---|---|---|
| Average temperature | 20°C | 27°C |
| Max. temperature | 22°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 47 mm | 57 mm |
| Rainy days | 9 days | 9 days |
Start of September
The month of September starts in Hermanus with mild temps, averaging around 20°C during the day and nights around 11°C.
Mid September
By mid-September, daytime temps stay steady at around 20°C, with nights around 11°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Hermanus is around 21°C, while nighttime temps are about 11°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Hermanus for all months and discover the best travel time
Curious about the weather in other parts of South Africa? Check out the climate and weather for spots like Cape Town, Krugerpark, Johannesburg, or explore other destinations in South Africa.
Temperature charts
These charts show the average temperatures in September in Hermanus, South Africa. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Hermanus
Temperature in September in Hermanus over the years
Precipitation charts
These charts show the average amount of precipitation in September in Hermanus, South Africa. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Hermanus
Total precipitation in September in Hermanus over the years
Daily UV index in September in Hermanus
This chart shows the average daily UV index in September in Hermanus, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Hermanus
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Average weather in Hermanus by month
Click on a month below to see detailed weather info for Hermanus. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.