S
M
T
W
T
F
S
30
68°
51°
31
67°
50°
1
69°
51°
2
70°
54°
3
71°
55°
4
70°
50°
5
69°
49°
6
67°
52°
7
70°
50°
8
70°
50°
9
69°
53°
10
70°
55°
11
70°
54°
12
69°
49°
13
66°
48°
14
65°
52°
15
64°
53°
16
65°
55°
17
66°
53°
18
67°
52°
19
64°
54°
20
68°
53°
21
68°
51°
22
67°
48°
23
62°
46°
24
62°
48°
25
63°
50°
26
64°
48°
27
63°
51°
28
61°
53°
29
64°
52°
30
65°
51°
1
64°
52°
2
64°
49°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Charmouth
Charmouth's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 46° and 55°. The average high for September is 66° with an average low of 51°. 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 Charmouth. See also: October | November | December.
