S
M
T
W
T
F
S
31
77°
43°
1
74°
52°
2
76°
45°
3
81°
52°
4
88°
51°
5
94°
62°
6
91°
69°
7
92°
69°
8
75°
48°
9
80°
46°
10
84°
66°
11
96°
72°
12
96°
74°
13
90°
69°
14
89°
66°
15
82°
60°
16
77°
54°
17
82°
61°
18
95°
71°
19
84°
67°
20
87°
65°
21
88°
60°
22
84°
63°
23
79°
64°
24
86°
59°
25
85°
59°
26
89°
71°
27
79°
67°
28
81°
67°
29
86°
62°
30
87°
70°
1
95°
75°
2
100°
78°
3
101°
76°
4
98°
72°
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 86° to 101°, with overnight lows between 62° and 78°. The average high for June is 95° with an average low of 72°. 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.
