S
M
T
W
T
F
S
30
73°
62°
31
69°
56°
1
71°
61°
2
68°
65°
3
69°
62°
4
68°
56°
5
66°
61°
6
71°
60°
7
66°
61°
8
64°
55°
9
65°
53°
10
64°
53°
11
66°
55°
12
68°
54°
13
67°
55°
14
67°
52°
15
66°
54°
16
63°
52°
17
64°
55°
18
65°
55°
19
66°
54°
20
65°
54°
21
66°
53°
22
65°
54°
23
66°
52°
24
62°
48°
25
63°
48°
26
62°
50°
27
64°
51°
28
64°
52°
29
65°
53°
30
65°
53°
1
64°
52°
2
65°
52°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Porthcawl
Porthcawl's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 48° and 65°. The average high for September is 66° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Porthcawl. See also: October | November | December.
