S
M
T
W
T
F
S
27
68°
52°
28
72°
52°
29
72°
55°
30
73°
59°
31
75°
55°
1
70°
52°
2
68°
50°
3
70°
59°
4
68°
57°
5
68°
55°
6
68°
52°
7
68°
61°
8
68°
59°
9
70°
57°
10
75°
55°
11
77°
57°
12
88°
64°
13
72°
63°
14
72°
59°
15
81°
55°
16
77°
63°
17
81°
57°
18
72°
63°
19
73°
61°
20
64°
52°
21
68°
52°
22
72°
52°
23
73°
54°
24
77°
57°
25
79°
59°
26
72°
61°
27
68°
61°
28
64°
59°
29
66°
57°
30
66°
59°
31
68°
59°
1
66°
59°
2
66°
57°
3
66°
59°
4
64°
54°
5
68°
52°
6
72°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cardiff
Cardiff's August 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Cardiff. See also: September | October | November.
