S
M
T
W
T
F
S
30
68°
57°
31
71°
57°
1
69°
58°
2
70°
57°
3
57°
42°
4
68°
55°
5
67°
56°
6
68°
55°
7
67°
54°
8
64°
53°
9
58°
53°
10
66°
54°
11
68°
54°
12
68°
55°
13
67°
53°
14
60°
52°
15
55°
51°
16
60°
52°
17
62°
51°
18
62°
53°
19
65°
52°
20
65°
52°
21
64°
51°
22
64°
52°
23
62°
51°
24
64°
50°
25
63°
48°
26
53°
48°
27
57°
48°
28
62°
49°
29
63°
48°
30
61°
46°
1
61°
48°
2
51°
37°
3
51°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oak Island
Oak Island's September 2026 forecast shows daily high temperatures ranging from 51° to 71°, with overnight lows between 37° and 58°. The average high for September is 63° 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 Oak Island. See also: October | November | December.