S
M
T
W
T
F
S
30
62°
54°
31
65°
55°
1
65°
54°
2
66°
54°
3
66°
53°
4
65°
55°
5
65°
54°
6
64°
54°
7
65°
55°
8
65°
50°
9
63°
53°
10
61°
54°
11
65°
52°
12
61°
53°
13
61°
52°
14
60°
50°
15
60°
50°
16
Hist. Avg.
73°
52°
17
Hist. Avg.
73°
52°
18
Hist. Avg.
73°
52°
19
Hist. Avg.
73°
52°
20
Hist. Avg.
73°
52°
21
Hist. Avg.
73°
52°
22
Hist. Avg.
72°
52°
23
Hist. Avg.
72°
51°
24
Hist. Avg.
72°
51°
25
Hist. Avg.
72°
51°
26
Hist. Avg.
72°
51°
27
Hist. Avg.
72°
51°
28
Hist. Avg.
72°
51°
29
Hist. Avg.
72°
51°
30
Hist. Avg.
72°
51°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
50°
3
Hist. Avg.
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Capetown
Capetown's September 2026 forecast shows daily high temperatures ranging from 60° to 66°, with overnight lows between 50° and 55°. The average high for September is 63° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Capetown. See also: October | November | December.
