S
M
T
W
T
F
S
26
85°
69°
27
94°
72°
28
90°
71°
29
72°
56°
30
61°
57°
1
60°
50°
2
75°
46°
3
79°
49°
4
82°
54°
5
91°
60°
6
65°
51°
7
69°
50°
8
77°
55°
9
89°
63°
10
85°
61°
11
77°
56°
12
84°
55°
13
90°
60°
14
90°
63°
15
86°
65°
16
86°
65°
17
85°
71°
18
89°
75°
19
90°
59°
20
75°
60°
21
76°
64°
22
86°
64°
23
83°
61°
24
88°
63°
25
84°
62°
26
87°
63°
27
82°
62°
28
86°
66°
29
87°
70°
30
86°
69°
31
87°
69°
1
86°
64°
2
80°
62°
3
81°
63°
4
82°
64°
5
81°
63°
6
86°
65°
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 80° to 87°, with overnight lows between 62° and 70°. The average high for May is 84° with an average low of 65°. 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.
