S
M
T
W
T
F
S
26
54°
40°
27
55°
43°
28
58°
46°
29
60°
47°
30
60°
47°
1
58°
46°
2
58°
46°
3
56°
45°
4
56°
43°
5
57°
44°
6
57°
43°
7
56°
42°
8
57°
42°
9
60°
46°
10
63°
48°
11
63°
48°
12
59°
47°
13
58°
48°
14
58°
46°
15
59°
47°
16
60°
45°
17
58°
44°
18
58°
44°
19
59°
45°
20
59°
44°
21
58°
44°
22
64°
48°
23
61°
47°
24
61°
51°
25
64°
50°
26
64°
50°
27
66°
51°
28
65°
51°
29
68°
52°
30
66°
45°
31
63°
47°
1
65°
51°
2
67°
48°
3
65°
51°
4
68°
50°
5
66°
51°
6
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Porthcawl
Porthcawl's May 2026 forecast shows daily high temperatures ranging from 54° to 68°, with overnight lows between 40° and 52°. The average high for May is 61° with an average low of 47°. 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 Porthcawl. See also: June | July | August.
