S
M
T
W
T
F
S
26
68°
50°
27
67°
50°
28
68°
51°
29
69°
56°
30
69°
56°
31
70°
55°
1
70°
56°
2
69°
55°
3
70°
56°
4
69°
55°
5
70°
56°
6
70°
56°
7
69°
55°
8
70°
56°
9
70°
55°
10
69°
56°
11
70°
55°
12
70°
55°
13
69°
53°
14
71°
53°
15
70°
54°
16
71°
55°
17
71°
56°
18
67°
56°
19
70°
55°
20
69°
54°
21
68°
51°
22
67°
52°
23
67°
52°
24
68°
53°
25
67°
53°
26
67°
51°
27
Hist. Avg.
70°
54°
28
Hist. Avg.
70°
54°
29
Hist. Avg.
70°
54°
30
Hist. Avg.
70°
54°
31
Hist. Avg.
70°
54°
1
Hist. Avg.
70°
54°
2
Hist. Avg.
70°
54°
3
Hist. Avg.
70°
54°
4
Hist. Avg.
70°
54°
5
Hist. Avg.
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Seaside-Monterey
Seaside-Monterey's August 2026 forecast shows daily high temperatures ranging from 67° to 71°, with overnight lows between 50° and 56°. The average high for August is 69° with an average low of 54°. 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 Seaside-Monterey. See also: September | October | November.