S
M
T
W
T
F
S
31
75°
40°
1
74°
49°
2
75°
43°
3
84°
52°
4
87°
56°
5
89°
65°
6
89°
65°
7
82°
57°
8
77°
53°
9
80°
55°
10
83°
60°
11
90°
63°
12
82°
60°
13
81°
60°
14
84°
59°
15
83°
63°
16
82°
58°
17
75°
55°
18
76°
62°
19
82°
61°
20
81°
59°
21
82°
56°
22
77°
56°
23
76°
57°
24
77°
61°
25
82°
65°
26
84°
64°
27
84°
59°
28
78°
58°
29
79°
58°
30
77°
57°
1
80°
59°
2
79°
58°
3
83°
62°
4
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Belfast
Belfast's June 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 52° and 65°. The average high for June is 82° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Belfast. See also: July | August | September.
