S
M
T
W
T
F
S
26
63°
51°
27
67°
47°
28
74°
48°
29
74°
48°
30
75°
49°
1
71°
53°
2
60°
53°
3
66°
54°
4
67°
51°
5
62°
52°
6
73°
51°
7
76°
53°
8
69°
52°
9
73°
51°
10
74°
53°
11
89°
48°
12
73°
53°
13
67°
55°
14
80°
48°
15
78°
49°
16
69°
49°
17
76°
49°
18
82°
63°
19
87°
49°
20
86°
53°
21
90°
53°
22
79°
52°
23
77°
53°
24
74°
52°
25
71°
51°
26
72°
48°
27
80°
50°
28
85°
52°
29
78°
53°
30
79°
51°
31
82°
53°
1
85°
53°
2
86°
55°
3
85°
54°
4
84°
55°
5
80°
53°
6
80°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dublin
Dublin's May 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 48° and 55°. The average high for May is 80° with an average low of 52°. 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. See also: June | July | August.
