S
M
T
W
T
F
S
30
86°
74°
31
89°
75°
1
89°
73°
2
92°
75°
3
90°
75°
4
89°
76°
5
91°
72°
6
87°
71°
7
85°
70°
8
85°
70°
9
86°
67°
10
N/A
11
88°
76°
12
88°
77°
13
89°
74°
14
90°
74°
15
85°
70°
16
86°
69°
17
89°
70°
18
87°
71°
19
84°
66°
20
83°
63°
21
80°
64°
22
82°
65°
23
83°
66°
24
84°
67°
25
84°
66°
26
82°
64°
27
81°
65°
28
86°
66°
29
86°
66°
30
84°
65°
1
85°
66°
2
85°
65°
3
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oak Island
Oak Island's September 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 63° and 77°. The average high for September is 85° with an average low of 68°. 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.