S
M
T
W
T
F
S
26
55°
41°
27
64°
45°
28
64°
50°
29
52°
36°
30
50°
32°
1
45°
32°
2
57°
30°
3
66°
45°
4
79°
48°
5
57°
39°
6
54°
32°
7
55°
32°
8
66°
32°
9
68°
43°
10
61°
34°
11
52°
36°
12
73°
36°
13
61°
41°
14
66°
36°
15
77°
52°
16
82°
59°
17
68°
54°
18
81°
55°
19
79°
52°
20
57°
45°
21
54°
43°
22
64°
45°
23
70°
52°
24
77°
54°
25
82°
55°
26
89°
57°
27
82°
48°
28
73°
44°
29
79°
51°
30
70°
47°
31
71°
49°
1
78°
51°
2
79°
50°
3
74°
53°
4
76°
54°
5
79°
57°
6
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wales
Wales's May 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 44° and 57°. The average high for May is 78° 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 Wales. See also: June | July | August.
