S
M
T
W
T
F
S
26
60°
47°
27
55°
45°
28
61°
44°
29
61°
46°
30
63°
50°
1
58°
47°
2
54°
45°
3
54°
43°
4
53°
42°
5
54°
43°
6
53°
44°
7
54°
43°
8
53°
42°
9
53°
45°
10
55°
46°
11
54°
43°
12
54°
43°
13
55°
44°
14
55°
47°
15
57°
48°
16
57°
47°
17
56°
48°
18
58°
48°
19
56°
47°
20
59°
47°
21
59°
48°
22
61°
47°
23
61°
48°
24
62°
49°
25
60°
49°
26
58°
48°
27
58°
47°
28
61°
49°
29
60°
49°
30
61°
48°
31
62°
50°
1
63°
50°
2
62°
49°
3
61°
50°
4
63°
50°
5
63°
49°
6
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coleraine
Coleraine's May 2026 forecast shows daily high temperatures ranging from 53° to 63°, with overnight lows between 42° and 50°. The average high for May is 58° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Coleraine. See also: June | July | August.
