S
M
T
W
T
F
S
26
78°
61°
27
77°
62°
28
76°
63°
29
78°
60°
30
77°
63°
31
74°
62°
1
76°
63°
2
77°
63°
3
77°
62°
4
79°
64°
5
80°
64°
6
80°
63°
7
79°
64°
8
79°
64°
9
77°
63°
10
74°
64°
11
74°
63°
12
76°
62°
13
79°
63°
14
77°
63°
15
78°
62°
16
77°
63°
17
77°
63°
18
80°
62°
19
80°
64°
20
81°
64°
21
81°
63°
22
80°
64°
23
80°
63°
24
76°
62°
25
75°
62°
26
77°
63°
27
80°
64°
28
81°
63°
29
81°
64°
30
82°
62°
31
81°
63°
1
80°
60°
2
79°
61°
3
81°
63°
4
81°
61°
5
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Santa Barbara
Santa Barbara's August 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 60° and 64°. The average high for August is 78° 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 Santa Barbara. See also: September | October | November.
