S
M
T
W
T
F
S
30
67°
52°
31
67°
54°
1
68°
55°
2
70°
53°
3
68°
51°
4
66°
54°
5
66°
55°
6
67°
53°
7
70°
54°
8
68°
52°
9
69°
51°
10
69°
52°
11
65°
53°
12
68°
49°
13
69°
53°
14
69°
51°
15
68°
47°
16
65°
50°
17
67°
48°
18
68°
48°
19
67°
54°
20
68°
54°
21
68°
53°
22
65°
53°
23
64°
51°
24
65°
52°
25
63°
53°
26
65°
52°
27
66°
52°
28
65°
51°
29
65°
50°
30
61°
45°
1
61°
48°
2
Hist. Avg.
61°
51°
3
Hist. Avg.
61°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Exmouth
Exmouth's September 2026 forecast shows daily high temperatures ranging from 61° to 70°, with overnight lows between 45° and 55°. The average high for September is 67° with an average low of 52°. 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 Exmouth. See also: October | November | December.