S
M
T
W
T
F
S
26
65°
47°
27
65°
48°
28
58°
44°
29
66°
50°
30
67°
51°
1
62°
48°
2
59°
46°
3
57°
45°
4
60°
44°
5
60°
46°
6
60°
46°
7
60°
45°
8
59°
46°
9
56°
44°
10
57°
45°
11
59°
44°
12
57°
44°
13
57°
46°
14
58°
48°
15
58°
48°
16
60°
47°
17
59°
46°
18
61°
49°
19
64°
50°
20
65°
50°
21
65°
49°
22
66°
51°
23
67°
49°
24
66°
50°
25
65°
51°
26
64°
50°
27
63°
49°
28
60°
49°
29
61°
50°
30
63°
51°
31
66°
51°
1
67°
52°
2
67°
52°
3
68°
51°
4
67°
51°
5
67°
50°
6
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Llantwit Major
Llantwit Major's May 2026 forecast shows daily high temperatures ranging from 56° to 68°, with overnight lows between 44° and 52°. The average high for May is 62° with an average low of 48°. 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 Llantwit Major. See also: June | July | August.
