S
M
T
W
T
F
S
26
78°
63°
27
80°
64°
28
83°
65°
29
83°
65°
30
82°
64°
31
83°
64°
1
82°
63°
2
82°
64°
3
81°
64°
4
83°
63°
5
83°
64°
6
81°
63°
7
79°
63°
8
79°
64°
9
82°
62°
10
83°
63°
11
84°
63°
12
83°
61°
13
83°
58°
14
81°
59°
15
80°
63°
16
82°
64°
17
84°
64°
18
86°
63°
19
86°
63°
20
85°
62°
21
85°
60°
22
84°
61°
23
82°
61°
24
82°
60°
25
83°
62°
26
84°
63°
27
84°
63°
28
85°
62°
29
85°
62°
30
83°
61°
31
85°
63°
1
86°
64°
2
86°
64°
3
85°
63°
4
85°
64°
5
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Clemente
San Clemente's August 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 58° and 65°. The average high for August is 83° with an average low of 63°. 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 San Clemente. See also: September | October | November.
