Measurements:
°C
°F
CURRENT WEATHER
23:01
Capetown
68°F
N 5 mph
Feels like: 68°F
Precip: 5%
World Resorts South Africa Capetown Weather

7 Day Weather Forecast

09.08
tue
DAY
84°F
S 6 mph
precip
1%
NIGHT
68°F
N 5 mph
precip
5%
09.09
wed
DAY
74°F
N 7 mph
precip
3%
NIGHT
60°F
N 7 mph
precip
14%
09.10
thu
DAY
66°F
N 10 mph
precip
14%
NIGHT
58°F
N 19 mph
precip
27%
09.11
fri
DAY
60°F
N 16 mph
precip
23%
NIGHT
58°F
N 16 mph
precip
28%
09.12
sat
DAY
64°F
N 13 mph
precip
29%
NIGHT
64°F
N 6 mph
precip
28%
09.13
sun
DAY
76°F
W 3 mph
precip
12%
NIGHT
66°F
NE 7 mph
precip
32%
09.14
mon
DAY
62°F
SE 9 mph
precip
77%
NIGHT
56°F
S 9 mph
precip
13%

Capetown Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Capetown was 13.8°F. The maximum and minimum values were 12.0°F and 15.1°F respectively.

Capetown on the Weather Map

Best Time to Visit Capetown
The most sunny months:
January 24 days
February 22 days
December 22 days
The most warm months:
January 80.0 °F
February 79.9 °F
March 77.4 °F
Warmest sea temperature:
February 63.4 °F
January 63.0 °F
March 61.7 °F
The most cold months:
July 61.9 °F
August 62.8 °F
June 63.2 °F
The most rainy months:
June 5 days
August 4 days
July 4 days
The most windy months:
January 11 mph
December 11 mph
November 11 mph
more details