S
M
T
W
T
F
S
29
70°
34°
30
73°
55°
31
79°
61°
1
80°
62°
2
82°
61°
3
82°
63°
4
79°
61°
5
63°
43°
6
66°
36°
7
66°
37°
8
73°
37°
9
75°
46°
10
77°
45°
11
82°
48°
12
82°
52°
13
77°
63°
14
82°
59°
15
84°
59°
16
84°
57°
17
84°
54°
18
77°
46°
19
64°
41°
20
75°
37°
21
81°
45°
22
81°
45°
23
81°
50°
24
81°
54°
25
79°
54°
26
82°
60°
27
83°
63°
28
79°
64°
29
76°
47°
30
68°
42°
1
67°
40°
2
65°
36°
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 65° to 83°, with overnight lows between 36° and 64°. The average high for April is 74° with an average low of 50°. 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.