S
M
T
W
T
F
S
29
34°
12°
30
43°
29°
31
40°
25°
1
33°
25°
2
36°
22°
3
32°
30°
4
34°
21°
5
45°
40°
6
45°
29°
7
35°
23°
8
34°
26°
9
42°
29°
10
48°
34°
11
52°
35°
12
42°
31°
13
41°
30°
14
43°
31°
15
45°
33°
16
48°
26°
17
40°
26°
18
40°
27°
19
42°
32°
20
45°
34°
21
50°
32°
22
43°
32°
23
44°
31°
24
49°
36°
25
51°
34°
26
45°
34°
27
46°
35°
28
49°
37°
29
52°
37°
30
50°
38°
1
51°
38°
2
52°
35°
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 32° to 52°, with overnight lows between 21° and 40°. The average high for April is 44° with an average low of 31°. 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.