S
M
T
W
T
F
S
26
57°
45°
27
57°
46°
28
55°
48°
29
57°
48°
30
57°
48°
1
54°
48°
2
54°
48°
3
55°
48°
4
59°
50°
5
61°
50°
6
59°
50°
7
59°
48°
8
59°
46°
9
57°
48°
10
59°
50°
11
64°
50°
12
66°
50°
13
63°
48°
14
61°
48°
15
59°
48°
16
57°
46°
17
59°
46°
18
63°
39°
19
61°
41°
20
59°
48°
21
63°
46°
22
57°
46°
23
59°
46°
24
57°
48°
25
56°
48°
26
56°
48°
27
57°
46°
28
56°
50°
29
54°
44°
30
52°
41°
31
53°
42°
1
54°
44°
2
55°
46°
3
56°
44°
4
56°
46°
5
55°
45°
6
58°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Capetown
Capetown's May 2026 forecast shows daily high temperatures ranging from 52° to 58°, with overnight lows between 41° and 50°. The average high for May is 55° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Capetown. See also: June | July | August.