S
M
T
W
T
F
S
26
85°
65°
27
84°
69°
28
82°
69°
29
84°
71°
30
87°
68°
31
89°
69°
1
87°
69°
2
87°
69°
3
85°
69°
4
81°
68°
5
83°
66°
6
85°
66°
7
88°
67°
8
95°
66°
9
91°
68°
10
85°
69°
11
91°
69°
12
76°
70°
13
79°
69°
14
80°
70°
15
79°
68°
16
79°
67°
17
85°
68°
18
87°
67°
19
85°
66°
20
84°
67°
21
81°
68°
22
83°
67°
23
85°
68°
24
86°
69°
25
82°
65°
26
84°
68°
27
84°
68°
28
85°
69°
29
81°
69°
30
82°
68°
31
83°
68°
1
82°
67°
2
81°
66°
3
82°
67°
4
80°
64°
5
79°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Seal Beach
Seal Beach's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 64° and 70°. The average high for August is 82° with an average low of 68°. 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 Seal Beach. See also: September | October | November.
