S
M
T
W
T
F
S
26
43°
34°
27
43°
36°
28
50°
36°
29
43°
28°
30
36°
25°
1
41°
23°
2
55°
23°
3
63°
34°
4
55°
34°
5
39°
28°
6
41°
28°
7
48°
25°
8
59°
21°
9
50°
34°
10
45°
27°
11
46°
27°
12
54°
34°
13
59°
34°
14
64°
28°
15
81°
37°
16
70°
39°
17
45°
36°
18
53°
39°
19
47°
32°
20
56°
32°
21
57°
35°
22
53°
42°
23
50°
42°
24
64°
44°
25
70°
48°
26
73°
49°
27
72°
49°
28
72°
48°
29
71°
47°
30
73°
51°
31
74°
44°
1
65°
49°
2
63°
49°
3
68°
48°
4
67°
49°
5
70°
49°
6
66°
48°
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 47° to 74°, with overnight lows between 32° and 51°. The average high for May is 64° with an average low of 45°. 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.
