S
M
T
W
T
F
S
26
90°
79°
27
91°
79°
28
95°
81°
29
93°
79°
30
90°
79°
31
90°
77°
1
91°
77°
2
88°
72°
3
90°
75°
4
91°
76°
5
91°
74°
6
90°
73°
7
89°
74°
8
88°
75°
9
89°
74°
10
89°
74°
11
88°
75°
12
89°
73°
13
90°
74°
14
91°
71°
15
87°
67°
16
87°
66°
17
91°
72°
18
91°
72°
19
92°
71°
20
93°
72°
21
91°
72°
22
91°
71°
23
90°
71°
24
91°
72°
25
91°
72°
26
92°
71°
27
92°
72°
28
91°
71°
29
91°
70°
30
92°
71°
31
91°
71°
1
90°
70°
2
92°
71°
3
92°
71°
4
88°
70°
5
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Seacliff
Seacliff's August 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 66° and 77°. The average high for August is 90° with an average low of 72°. 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 Seacliff. See also: September | October | November.