S
M
T
W
T
F
S
30
66°
57°
31
65°
57°
1
67°
55°
2
67°
61°
3
67°
61°
4
66°
58°
5
66°
57°
6
65°
59°
7
66°
59°
8
67°
58°
9
63°
56°
10
66°
55°
11
61°
54°
12
61°
54°
13
62°
53°
14
61°
55°
15
63°
55°
16
62°
54°
17
64°
54°
18
63°
52°
19
60°
54°
20
60°
53°
21
61°
50°
22
62°
52°
23
61°
49°
24
62°
53°
25
61°
53°
26
62°
52°
27
62°
50°
28
60°
52°
29
61°
51°
30
62°
52°
1
62°
53°
2
63°
53°
3
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gorseinon
Gorseinon's September 2026 forecast shows daily high temperatures ranging from 60° to 67°, with overnight lows between 49° and 61°. The average high for September is 63° 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 Gorseinon. See also: October | November | December.
