S
M
T
W
T
F
S
26
82°
60°
27
85°
69°
28
84°
67°
29
84°
66°
30
82°
68°
31
85°
68°
1
83°
74°
2
81°
75°
3
79°
74°
4
81°
73°
5
82°
73°
6
88°
75°
7
86°
73°
8
87°
74°
9
88°
72°
10
88°
71°
11
85°
71°
12
82°
70°
13
83°
67°
14
82°
69°
15
86°
67°
16
81°
67°
17
88°
72°
18
87°
69°
19
87°
73°
20
88°
72°
21
87°
71°
22
85°
72°
23
87°
73°
24
89°
74°
25
88°
73°
26
85°
72°
27
81°
72°
28
82°
71°
29
85°
71°
30
86°
72°
31
85°
71°
1
86°
70°
2
79°
66°
3
78°
66°
4
78°
67°
5
79°
65°
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 78° to 89°, with overnight lows between 65° and 75°. The average high for August is 84° with an average low of 71°. 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.