S
M
T
W
T
F
S
26
86°
72°
27
85°
73°
28
89°
74°
29
87°
74°
30
89°
73°
31
88°
74°
1
89°
73°
2
88°
74°
3
88°
74°
4
90°
73°
5
87°
73°
6
87°
72°
7
88°
74°
8
88°
72°
9
83°
68°
10
82°
67°
11
82°
72°
12
83°
72°
13
83°
71°
14
84°
73°
15
87°
73°
16
84°
72°
17
88°
67°
18
82°
65°
19
83°
70°
20
86°
71°
21
88°
72°
22
87°
71°
23
88°
72°
24
87°
69°
25
84°
69°
26
80°
66°
27
80°
66°
28
79°
67°
29
81°
67°
30
81°
68°
31
83°
70°
1
86°
71°
2
86°
71°
3
85°
65°
4
85°
63°
5
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rehoboth Beach
Rehoboth Beach's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 63° and 74°. The average high for August is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Rehoboth Beach. See also: September | October | November.