Western Cape - South Africa weather in September 2025
September
Western Cape - South Africa weather in September 2025
September
Day
20 °C
Night
10 °C
Sea
16 °C
Precipitation
49 mm
in month
Rainy days
7 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
75 %
Day
20 °C
Night
10 °C
Sea
16 °C
Precipitation
49 mm
in month
Rainy days
7 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
75 %
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Weather overview and FAQs
Weather overview
In Western Cape in September, the average air temperature ranges from 20 °C (67 °F) during the day to 10 °C (50 °F) at night. There are 7 days of rain on average, where the rainfall is 49 mm (1.91 in).
Is September a good month to visit Western Cape?
There are good conditions for visiting in Western Cape in September. Especially for non-beach activities, such as hiking or sightseeing. There are only 7 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 20 °C (67 °F), but others will feel perfectly fine. The temperature of 10 °C (50 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What temperature can I expect during the day in Western Cape in September?
In September in Western Cape, the average daily temperatures will be 20 °C (67 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
How many days of precipitation on average can I expect in Western Cape in September?
There are 7 days, which are rainy in Western Cape in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.7 days of the week, or in general - 25 % days.
What is the sea temperature in Western Cape in September?
The temperature of the sea in Western Cape in September is 16 °C (61 °F). This is a sea temperature for resilient people only, most people won't enjoy swimming in such cold water or will have to use a wetsuit for water activities.
What is the air temperature in September in Western Cape at night?
The average night temperature in Western Cape in September is 10 °C (50 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
What is the rainfall intensity in September in Western Cape?
There is precipitation of 49 mm (1.91 in) in Western Cape in September, which means 2 mm (0.06 in) rainfall per day on average.
Is there a dry season in September in Western Cape?
No, September is not a dry month in Western Cape, expect rain approximately 7 days in a month.
How many sunny hours can I expect in September in Western Cape?
There is an average length of sunshine of 7 hours per day in September in Western Cape.
Is the weather in Western Cape warmer in September than in August?
Yes, in Western Cape in September it is warmer than in August by 1 °C (33 °F).
How windy is it in September in Western Cape?
An average wind scale that can be expected in Western Cape in September is 4.
What level of humidity is to expect in September in Western Cape?
In September in Western Cape, expect humidity around 75 %.
What is the temperature trend in September in Western Cape?
Over the course of September in Western Cape, the temperatures are rising from 19 °C (67 °F) at the beginning of the month to 21 °C (69 °F) at the end of the month.
Is the sea in Western Cape warmer in September than in August?
No, the sea temperature in Western Cape in September is not higher than in August.
Is Western Cape rainier in September than in October?
No, in Western Cape in September it does not rain more than in October.
How long is the day (from dawn till dusk) in Western Cape in September?
The length of daylight in Western Cape in September is 12 hours.
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