S
M
T
W
T
F
S
28
86°
48°
29
85°
52°
30
86°
54°
1
88°
57°
2
91°
58°
3
92°
59°
4
91°
59°
5
88°
51°
6
82°
48°
7
82°
48°
8
85°
54°
9
90°
56°
10
90°
56°
11
88°
55°
12
88°
55°
13
90°
56°
14
90°
56°
15
89°
57°
16
84°
56°
17
86°
55°
18
87°
54°
19
89°
57°
20
90°
57°
21
87°
58°
22
84°
55°
23
85°
55°
24
86°
56°
25
88°
57°
26
89°
58°
27
83°
55°
28
84°
56°
29
83°
55°
30
83°
51°
31
84°
51°
1
85°
52°
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 82° to 92°, with overnight lows between 48° and 59°. The average high for July is 87° 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.
