S
M
T
W
T
F
S
30
67°
58°
31
68°
53°
1
68°
52°
2
66°
55°
3
66°
53°
4
70°
51°
5
67°
52°
6
66°
53°
7
67°
56°
8
70°
57°
9
71°
56°
10
69°
55°
11
67°
56°
12
69°
54°
13
69°
55°
14
68°
56°
15
69°
55°
16
69°
54°
17
66°
55°
18
67°
55°
19
69°
50°
20
66°
49°
21
62°
50°
22
64°
49°
23
65°
52°
24
66°
54°
25
65°
55°
26
67°
55°
27
67°
54°
28
66°
53°
29
64°
51°
30
60°
48°
1
60°
47°
2
61°
46°
3
61°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Southwold
Southwold's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 46° and 58°. The average high for September is 66° with an average low of 53°. 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 Southwold. See also: October | November | December.
