S
M
T
W
T
F
S
31
70°
49°
1
64°
46°
2
69°
45°
3
71°
46°
4
71°
49°
5
70°
49°
6
66°
50°
7
66°
48°
8
63°
42°
9
67°
43°
10
66°
45°
11
64°
49°
12
65°
45°
13
70°
51°
14
71°
50°
15
73°
52°
16
73°
52°
17
72°
53°
18
73°
52°
19
73°
52°
20
72°
50°
21
67°
53°
22
72°
52°
23
73°
54°
24
72°
53°
25
75°
52°
26
73°
53°
27
73°
52°
28
72°
51°
29
73°
47°
30
73°
54°
1
72°
55°
2
75°
53°
3
74°
47°
4
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cardiff
Cardiff's June 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 42° and 55°. The average high for June is 70° with an average low of 50°. 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 Cardiff. See also: July | August | September.
