S
M
T
W
T
F
S
30
81°
61°
31
82°
74°
1
88°
70°
2
81°
72°
3
88°
71°
4
88°
73°
5
82°
63°
6
79°
62°
7
78°
60°
8
83°
56°
9
83°
69°
10
90°
72°
11
77°
71°
12
79°
74°
13
81°
72°
14
78°
66°
15
76°
65°
16
78°
63°
17
83°
68°
18
82°
64°
19
78°
62°
20
72°
57°
21
69°
56°
22
71°
57°
23
72°
60°
24
76°
59°
25
70°
57°
26
70°
59°
27
75°
63°
28
78°
62°
29
73°
60°
30
74°
62°
1
74°
61°
2
72°
60°
3
73°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bethany Beach
Bethany Beach's September 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 56° and 74°. The average high for September is 75° with an average low of 63°. 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 Bethany Beach. See also: October | November | December.
