S
M
T
W
T
F
S
31
67°
43°
1
66°
41°
2
65°
46°
3
64°
48°
4
60°
42°
5
55°
32°
6
62°
32°
7
66°
34°
8
71°
49°
9
70°
42°
10
65°
40°
11
62°
44°
12
70°
49°
13
72°
49°
14
67°
47°
15
69°
47°
16
63°
38°
17
61°
41°
18
60°
41°
19
63°
42°
20
59°
40°
21
50°
46°
22
61°
45°
23
63°
37°
24
67°
41°
25
66°
41°
26
65°
42°
27
60°
37°
28
64°
41°
29
68°
39°
30
68°
49°
1
69°
46°
2
61°
31°
3
62°
34°
4
65°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Johannesburg
Johannesburg's June 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 31° and 46°. The average high for June is 64° with an average low of 36°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Johannesburg. See also: July | August | September.