S
M
T
W
T
F
S
30
87°
73°
31
89°
73°
1
92°
72°
2
95°
75°
3
91°
75°
4
94°
74°
5
97°
72°
6
87°
70°
7
84°
69°
8
84°
66°
9
85°
67°
10
89°
69°
11
91°
77°
12
89°
73°
13
91°
77°
14
95°
77°
15
85°
65°
16
85°
65°
17
86°
64°
18
92°
69°
19
84°
71°
20
83°
68°
21
87°
69°
22
81°
73°
23
78°
69°
24
73°
59°
25
72°
56°
26
77°
56°
27
79°
58°
28
80°
63°
29
83°
64°
30
81°
68°
1
84°
69°
2
82°
64°
3
79°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Topsail Beach
Topsail Beach's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 56° and 69°. The average high for September is 79° with an average low of 62°. 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 Topsail Beach. See also: October | November | December.
