S
M
T
W
T
F
S
31
91°
70°
1
91°
68°
2
85°
66°
3
82°
59°
4
85°
61°
5
88°
65°
6
88°
70°
7
80°
71°
8
80°
70°
9
80°
68°
10
84°
67°
11
83°
68°
12
86°
68°
13
87°
68°
14
86°
69°
15
87°
69°
16
88°
66°
17
84°
64°
18
89°
69°
19
90°
70°
20
93°
70°
21
90°
69°
22
90°
70°
23
89°
71°
24
90°
71°
25
90°
70°
26
91°
71°
27
91°
71°
28
88°
70°
29
90°
71°
30
84°
71°
1
84°
70°
2
85°
68°
3
85°
66°
4
86°
67°
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 80° to 93°, with overnight lows between 59° and 71°. The average high for June is 87° with an average low of 68°. 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.
