September is a slightly cold and slightly rainy time for sunbathing in Cape Town. September is too cold for swimming in Cape Town for any length of time, unless you have a wetsuit. Consider visiting Cape Town in the months of January, February, March, December, for the best beach weather. Also consider one of our other suggestions for September.
The average maximum temperature in Cape Town in September is 19°. The average maximum temperature is 18° in the previous month and 22° in the next month.
The average temperature in Cape Town in September is 14°. The average temperature ranges is 13° in the previous month and 17° in the next month.
The average minimum temperature in Cape Town in September is 10°. The minimum temperature is 8° in the previous month and 12° in the next month.
The average day light hours per day in Cape Town in September are 11.9 and there are 7.2 hours of sunshine per day on average during September making it a quite sunny month with some cloud cover.
The ultraviolet index in Cape Town in September is typically 7.3 during September. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Cape Town in September is 15° which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
The average total rainfall in Cape Town in September is 8.1cm and on average there are 10.9 rainy days in September making it a slightly wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Cape Town in September is 12° which is very comfortable. The dew point is 11° in the previous month and 13° in the next month.
The average maximum relative humidity in Cape Town in September is typically 92.7%. The maximum relative humidity is 94.4% in the previous month and 90.5% in the next month.
The average relative humidity in Cape Town in September is typically 73.2%. The average relative humidity is 76.4% in the previous month and 69.9% in the next month.
The average maximum wind speed in Cape Town in September is typically 29kmh. The average maximum wind speed is 28kmh in the previous month and 32kmh in the next month.
The average wind speed in Cape Town in September is typically 15kmh. The average wind speed is 15kmh in the previous month and 17kmh in the next month.
The average wind direction in Cape Town in September is from the West-Southwest.
