Cape Town in September
Find out everything about the water temperature in Cape Town in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:
47.4 °F
Average:
57.3 °F
Maximum:
63.2 °F
Sea water temperature in Cape Town in September
In the city of Cape Town, the month of September is too cold for swimming. The minimum recorded temperature during this month was 47.4°F on September 24, 2024, with an average temperature being 57.3°F and a maximum temperature reaching 63.2°F on September 19, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 57.6°F | 57.5°F | 57.6°F |
| Sep 2 | 57.6°F | 57.9°F | 57.7°F |
| Sep 3 | 58.1°F | 59.1°F | 57.8°F |
| Sep 4 | 57.8°F | 59.1°F | 57.7°F |
| Sep 5 | 57.8°F | 58.4°F | 58.0°F |
| Sep 6 | 57.7°F | 57.5°F | 57.7°F |
| Sep 7 | 57.5°F | 57.3°F | 58.0°F |
| Sep 8 | 57.6°F | 56.4°F | 58.3°F |
| Sep 9 | 57.6°F | 55.1°F | 58.0°F |
| Sep 10 | 57.2°F | 52.5°F | 57.5°F |
| Sep 11 | 57.3°F | 52.9°F | 58.3°F |
| Sep 12 | 57.2°F | 52.9°F | 58.0°F |
| Sep 13 | 57.1°F | 52.9°F | 58.3°F |
| Sep 14 | 57.2°F | 52.8°F | 58.5°F |
| Sep 15 | 57.4°F | 54.2°F | 58.5°F |
| Sep 16 | 57.4°F | 54.0°F | 59.3°F |
| Sep 17 | 57.6°F | 52.5°F | 61.4°F |
| Sep 18 | 57.4°F | 52.3°F | 62.1°F |
| Sep 19 | 57.4°F | 51.6°F | 63.2°F |
| Sep 20 | 57.3°F | 50.6°F | 62.6°F |
| Sep 21 | 57.1°F | 49.0°F | 61.7°F |
| Sep 22 | 57.1°F | 50.5°F | 62.4°F |
| Sep 23 | 57.1°F | 49.9°F | 61.6°F |
| Sep 24 | 56.6°F | 47.4°F | 59.6°F |
| Sep 25 | 56.8°F | 48.6°F | 59.4°F |
| Sep 26 | 57.1°F | 51.0°F | 58.6°F |
| Sep 27 | 57.3°F | 53.4°F | 55.6°F |
| Sep 28 | 57.0°F | 53.9°F | 54.4°F |
| Sep 29 | 57.0°F | 54.1°F | 55.1°F |
| Sep 30 | 57.2°F | 55.2°F | 55.5°F |
In an average year, Cape Town offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Cape Town was recorded on February 13, 2014, reaching a 68.4°F. While the coldest temperature occurred on September 24, 2024, dipping to 47.4°F. The average readings by season are 61.1°F in Winter, 58.1°F in Spring, 57.6°F in Summer, and 57.9°F in Autumn.
September's temperature is a dip compared to warmer August at 57.5°F and October at 57.5°F.