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
N/A
9
87°
74°
10
88°
78°
11
87°
74°
12
85°
75°
13
87°
74°
14
88°
74°
15
89°
73°
16
91°
70°
17
86°
69°
18
87°
71°
19
86°
67°
20
83°
67°
21
82°
68°
22
84°
62°
23
85°
68°
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 81° to 91°, with overnight lows between 62° and 78°. The average high for September is 85° with an average low of 69°. 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.