S
M
T
W
T
F
S
31
65°
50°
1
66°
52°
2
66°
52°
3
67°
51°
4
66°
51°
5
66°
52°
6
65°
50°
7
62°
49°
8
67°
52°
9
67°
53°
10
68°
53°
11
68°
52°
12
67°
52°
13
68°
53°
14
68°
53°
15
69°
52°
16
66°
53°
17
68°
54°
18
66°
54°
19
64°
53°
20
66°
54°
21
65°
52°
22
67°
49°
23
66°
48°
24
67°
52°
25
68°
49°
26
65°
52°
27
68°
53°
28
67°
52°
29
68°
52°
30
68°
54°
1
70°
52°
2
69°
52°
3
71°
55°
4
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in The Mumbles
The Mumbles's June 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 48° and 55°. The average high for June is 67° with an average low of 52°. 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 The Mumbles. See also: July | August | September.