28.08
fri
fri
Day
72°F
NE 2 mph
Precip.
7%
7%
Night
59°F
N 7 mph
Precip.
22%
22%
29.08
sat
sat
Day
64°F
NW 5 mph
Precip.
13%
13%
Night
55°F
N 11 mph
Precip.
7%
7%
30.08
sun
sun
Day
59°F
N 14 mph
Precip.
2%
2%
Night
54°F
N 9 mph
Precip.
6%
6%
31.08
mon
mon
Day
59°F
N 9 mph
Precip.
7%
7%
Night
54°F
SE 2 mph
Precip.
7%
7%
01.09
tue
tue
Day
64°F
SE 2 mph
Precip.
11%
11%
Night
57°F
N 6 mph
Precip.
23%
23%
02.09
wed
wed
Day
61°F
N 12 mph
Precip.
17%
17%
Night
55°F
N 21 mph
Precip.
23%
23%
03.09
thu
thu
Day
61°F
NW 24 mph
Precip.
8%
8%
Night
57°F
NW 28 mph
Precip.
20%
20%
sea water
temperature
temperature
| Capetown |
monthly
weather
weather
| Capetown |
current
weather
weather
| Capetown |
14 days
forecast
forecast
| Capetown |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 55.0°F. The highest and lowest sea temperatures during the month were 56.3°F and 52.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 56.9°F. The highest and lowest sea temperatures during the month were 59.2°F and 53.6°F.
Air temperature in Capetown, °F
Precipitation total in Capetown, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Capetown
Capetown on a weather map
Places in South Africa:
Name
°F
24 Hours Forecast
Capetown
Local time: 21:45
August 29, saturday
0000
59°F
N
7 mph
7 mph
0300
59°F
N
6 mph
6 mph
0600
59°F
N
6 mph
6 mph
0900
59°F
NW
7 mph
7 mph
1200
64°F
NW
5 mph
5 mph
1500
59°F
N
16 mph
16 mph
1800
57°F
N
11 mph
11 mph
2100
57°F
N
11 mph
11 mph
