S
M
T
W
T
F
S
26
53°
44°
27
53°
46°
28
54°
45°
29
54°
46°
30
55°
46°
1
54°
45°
2
54°
45°
3
55°
42°
4
52°
41°
5
53°
42°
6
53°
41°
7
54°
47°
8
56°
47°
9
57°
46°
10
56°
47°
11
56°
47°
12
57°
46°
13
56°
46°
14
57°
48°
15
59°
48°
16
60°
49°
17
61°
49°
18
61°
50°
19
62°
49°
20
58°
49°
21
58°
48°
22
59°
49°
23
60°
50°
24
59°
50°
25
63°
45°
26
64°
51°
27
64°
44°
28
61°
50°
29
62°
51°
30
64°
44°
31
61°
51°
1
65°
46°
2
65°
46°
3
60°
47°
4
61°
46°
5
61°
44°
6
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dublin 5
Dublin 5's May 2026 forecast shows daily high temperatures ranging from 52° to 65°, with overnight lows between 41° and 51°. 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 Dublin 5. See also: June | July | August.