S
M
T
W
T
F
S
29
23°
9°
30
28°
11°
31
36°
13°
1
37°
13°
2
34°
27°
3
45°
28°
4
45°
28°
5
34°
26°
6
36°
29°
7
37°
27°
8
N/A
9
42°
29°
10
51°
27°
11
46°
30°
12
36°
24°
13
42°
30°
14
49°
31°
15
45°
23°
16
33°
22°
17
43°
26°
18
44°
26°
19
41°
27°
20
42°
28°
21
54°
32°
22
49°
31°
23
46°
32°
24
45°
30°
25
47°
31°
26
48°
29°
27
48°
30°
28
49°
35°
29
49°
36°
30
51°
34°
1
57°
39°
2
56°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Cardiff
Cardiff's April 2026 forecast shows daily high temperatures ranging from 33° to 57°, with overnight lows between 22° and 39°. The average high for April is 46° with an average low of 30°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Cardiff. See also: May | June | July.
