S
M
T
W
T
F
S
31
79°
40°
1
87°
42°
2
89°
45°
3
88°
49°
4
92°
50°
5
93°
51°
6
95°
50°
7
90°
52°
8
91°
57°
9
88°
56°
10
85°
55°
11
82°
51°
12
91°
43°
13
94°
49°
14
87°
52°
15
88°
52°
16
98°
63°
17
102°
62°
18
99°
64°
19
100°
67°
20
96°
54°
21
84°
52°
22
86°
54°
23
90°
55°
24
92°
56°
25
92°
59°
26
91°
57°
27
88°
55°
28
87°
56°
29
86°
50°
30
87°
54°
1
88°
55°
2
87°
54°
3
88°
54°
4
89°
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 84° to 102°, with overnight lows between 50° and 67°. The average high for June is 91° with an average low of 57°. 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.
