S
M
T
W
T
F
S
26
48°
36°
27
50°
46°
28
52°
45°
29
52°
45°
30
52°
46°
1
52°
46°
2
50°
37°
3
46°
36°
4
46°
39°
5
46°
37°
6
45°
37°
7
48°
43°
8
54°
45°
9
46°
43°
10
45°
36°
11
43°
36°
12
50°
43°
13
52°
39°
14
52°
41°
15
48°
43°
16
52°
45°
17
50°
45°
18
54°
45°
19
50°
45°
20
54°
48°
21
53°
49°
22
57°
50°
23
55°
50°
24
54°
48°
25
55°
49°
26
55°
49°
27
54°
48°
28
55°
48°
29
54°
47°
30
53°
47°
31
53°
46°
1
54°
47°
2
53°
47°
3
51°
47°
4
52°
46°
5
52°
47°
6
53°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ireland
Ireland's May 2026 forecast shows daily high temperatures ranging from 51° to 57°, with overnight lows between 46° and 50°. The average high for May is 54° with an average low of 48°. 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 Ireland. See also: June | July | August.
