S
M
T
W
T
F
S
29
55°
23°
30
63°
44°
31
68°
53°
1
58°
34°
2
55°
33°
3
72°
47°
4
77°
39°
5
65°
29°
6
38°
29°
7
31°
19°
8
55°
36°
9
67°
46°
10
60°
33°
11
52°
32°
12
66°
50°
13
74°
55°
14
73°
45°
15
56°
38°
16
56°
34°
17
59°
40°
18
62°
39°
19
59°
36°
20
60°
32°
21
63°
39°
22
66°
40°
23
66°
40°
24
65°
35°
25
56°
31°
26
55°
33°
27
55°
30°
28
57°
35°
29
56°
31°
30
55°
32°
1
59°
34°
2
57°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Belfast
Belfast's April 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 30° and 55°. The average high for April is 60° with an average low of 37°. 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 Belfast. See also: May | June | July.