South AfricaAverage weather for Cape Town in September
It's pleasantly warm in September in Cape Town with an average temperature of 20°C. Temperatures this month range from a low of 19°C to a high of 23°C. At night, you can expect temperatures between 10°C and 12°C.
Start of September
The month of September starts in Cape Town with mild temps, averaging around 21°C during the day and nights around 11°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid September
By mid-September, daytime temps drop to 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 Cape Town is around 21°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
Water temperature
The water temperature at Cape Town is 17°C this month. You can swim, but it's a bit chilly.
In September, there is an average of 65 mm of precipitation, spread over 7 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Cape Town in September |
New York | ||
|---|---|---|---|
 Average temperature |
20°C | 27°C | |
 Max. temperature |
23°C | 31°C | |
| Min. temperature |
19°C | -5°C | |
 Total precipitation |
65 mm | 57 mm | |
| Rainy days |
7 days | 9 days | |
August
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.
Is September a good time to visit Cape Town?
Looking for great weather? September is a good time to be in Cape Town. The temperatures are nice, and there’s not too much rain.
Temperature records
With 36°C in 2019, Cape Town reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 14°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 16°C.
Check out the climate of Cape Town 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 Krugerpark, Johannesburg, Stellenbosch, or explore other destinations in South Africa.
Daily Temperature in September in Cape Town
This chart shows the average daily high and low temperatures in September for Cape Town, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Cape Town
The chart below shows the average daily precipitation in September for Cape Town, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 7 days of precipitation in Cape Town.
Daily UV index in September in Cape Town
This chart shows the average daily UV index in September in Cape Town, 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.
Temperature in September in Cape Town over the years
This chart shows the average temperature in September in Cape Town, measured in degrees Celsius, over the past few years.
Total precipitation in September in Cape Town over the years
This chart shows the average precipitation in September in Cape Town, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Cape Town
Click on any day in September to get detailed info about the usual weather on that day in Cape Town. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Cape Town
Have you been to Cape Town in September?
Share your weather experience in September in Cape Town.
Average weather in Cape Town by month
Click on a month below to see detailed weather info for Cape Town. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Cape Town for all months at once
