S
M
T
W
T
F
S
26
74°
63°
27
76°
65°
28
72°
64°
29
72°
66°
30
79°
64°
31
80°
65°
1
82°
66°
2
79°
67°
3
78°
66°
4
82°
64°
5
84°
66°
6
86°
65°
7
84°
64°
8
84°
66°
9
82°
63°
10
83°
64°
11
81°
65°
12
82°
62°
13
79°
62°
14
80°
64°
15
79°
64°
16
81°
63°
17
83°
64°
18
84°
65°
19
84°
65°
20
85°
64°
21
85°
65°
22
84°
65°
23
84°
64°
24
85°
65°
25
85°
64°
26
84°
65°
27
85°
64°
28
85°
64°
29
84°
63°
30
83°
63°
31
83°
62°
1
82°
63°
2
83°
64°
3
79°
61°
4
79°
62°
5
83°
63°
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 61° and 67°. The average high for August is 82° with an average low of 64°. 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.
