S
M
T
W
T
F
S
28
90°
56°
29
91°
57°
30
87°
50°
1
88°
55°
2
87°
54°
3
88°
54°
4
89°
53°
5
90°
56°
6
90°
57°
7
89°
56°
8
90°
56°
9
90°
57°
10
89°
56°
11
90°
55°
12
89°
56°
13
90°
53°
14
89°
54°
15
90°
57°
16
90°
57°
17
87°
56°
18
86°
55°
19
87°
56°
20
89°
57°
21
88°
58°
22
85°
58°
23
84°
57°
24
85°
57°
25
86°
56°
26
85°
56°
27
88°
54°
28
86°
53°
29
91°
56°
30
92°
55°
31
86°
55°
1
84°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Cardiff
Cardiff's July 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 50° and 58°. The average high for July is 88° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Cardiff. See also: August | September | October.
