S
M
T
W
T
F
S
30
90°
80°
31
91°
77°
1
84°
80°
2
87°
80°
3
89°
78°
4
90°
78°
5
87°
77°
6
90°
77°
7
89°
79°
8
93°
77°
9
92°
76°
10
91°
76°
11
91°
74°
12
89°
76°
13
89°
75°
14
88°
73°
15
85°
76°
16
84°
75°
17
85°
75°
18
85°
74°
19
83°
75°
20
83°
75°
21
82°
74°
22
82°
75°
23
84°
74°
24
85°
74°
25
86°
73°
26
88°
74°
27
89°
73°
28
88°
73°
29
87°
72°
30
88°
73°
1
87°
73°
2
83°
72°
3
83°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Holly Beach
Holly Beach's September 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 72° and 80°. The average high for September is 87° with an average low of 75°. 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 Holly Beach. See also: October | November | December.