S
M
T
W
T
F
S
26
83°
68°
27
85°
65°
28
86°
64°
29
83°
68°
30
84°
70°
31
83°
65°
1
83°
69°
2
85°
70°
3
88°
65°
4
85°
64°
5
82°
63°
6
83°
64°
7
83°
65°
8
81°
63°
9
82°
64°
10
84°
68°
11
83°
66°
12
83°
69°
13
86°
69°
14
82°
68°
15
86°
69°
16
88°
63°
17
87°
63°
18
81°
64°
19
81°
67°
20
82°
62°
21
81°
62°
22
82°
64°
23
81°
66°
24
85°
67°
25
87°
66°
26
86°
61°
27
86°
60°
28
79°
59°
29
79°
60°
30
80°
62°
31
81°
65°
1
84°
66°
2
85°
65°
3
85°
65°
4
83°
66°
5
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Seabrook
Seabrook's August 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 59° and 70°. The average high for August is 84° with an average low of 65°. 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 Seabrook. See also: September | October | November.