S
M
T
W
T
F
S
26
61°
41°
27
57°
39°
28
54°
39°
29
59°
43°
30
63°
48°
1
64°
50°
2
61°
50°
3
57°
50°
4
57°
39°
5
54°
36°
6
55°
34°
7
59°
50°
8
55°
46°
9
57°
41°
10
55°
37°
11
55°
39°
12
59°
39°
13
54°
43°
14
55°
41°
15
54°
39°
16
57°
45°
17
55°
43°
18
55°
45°
19
61°
50°
20
64°
50°
21
66°
54°
22
64°
55°
23
70°
54°
24
70°
53°
25
69°
53°
26
65°
52°
27
65°
58°
28
65°
57°
29
59°
50°
30
68°
52°
31
67°
54°
1
66°
53°
2
62°
49°
3
64°
50°
4
63°
51°
5
60°
51°
6
60°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Howth
Howth's May 2026 forecast shows daily high temperatures ranging from 59° to 70°, with overnight lows between 49° and 58°. The average high for May is 65° 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 Howth. See also: June | July | August.
