S
M
T
W
T
F
S
26
52°
25°
27
48°
32°
28
43°
27°
29
45°
28°
30
39°
25°
1
55°
23°
2
68°
36°
3
73°
30°
4
45°
32°
5
36°
28°
6
46°
28°
7
55°
23°
8
63°
36°
9
54°
32°
10
54°
27°
11
68°
32°
12
70°
39°
13
75°
32°
14
77°
57°
15
72°
41°
16
52°
34°
17
48°
32°
18
41°
35°
19
50°
32°
20
65°
46°
21
63°
45°
22
60°
44°
23
70°
49°
24
72°
52°
25
75°
54°
26
76°
53°
27
76°
55°
28
73°
52°
29
74°
52°
30
75°
53°
31
69°
45°
1
67°
50°
2
66°
50°
3
70°
50°
4
73°
52°
5
68°
51°
6
66°
51°
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 41° to 76°, with overnight lows between 32° and 55°. The average high for May is 67° with an average low of 49°. 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.
