S
M
T
W
T
F
S
28
71°
55°
29
71°
56°
30
72°
55°
1
74°
58°
2
71°
55°
3
72°
55°
4
73°
56°
5
72°
56°
6
72°
56°
7
71°
55°
8
70°
55°
9
67°
54°
10
68°
56°
11
69°
56°
12
70°
55°
13
71°
56°
14
70°
56°
15
73°
57°
16
74°
57°
17
72°
56°
18
73°
57°
19
70°
56°
20
68°
54°
21
69°
57°
22
70°
56°
23
68°
53°
24
68°
52°
25
69°
56°
26
71°
55°
27
69°
57°
28
73°
56°
29
70°
52°
30
73°
57°
31
74°
58°
1
74°
57°
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 67° to 74°, with overnight lows between 52° and 58°. The average high for July is 71° with an average low of 56°. 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.
