S
M
T
W
T
F
S
26
85°
78°
27
88°
77°
28
89°
78°
29
89°
78°
30
88°
77°
31
87°
78°
1
87°
78°
2
88°
77°
3
87°
78°
4
88°
78°
5
88°
77°
6
89°
79°
7
89°
79°
8
90°
78°
9
90°
79°
10
89°
79°
11
90°
78°
12
89°
79°
13
90°
78°
14
89°
79°
15
88°
78°
16
89°
78°
17
89°
79°
18
88°
79°
19
89°
78°
20
89°
79°
21
88°
79°
22
89°
78°
23
89°
79°
24
88°
79°
25
89°
78°
26
89°
79°
27
88°
79°
28
89°
78°
29
89°
80°
30
88°
79°
31
90°
80°
1
90°
80°
2
89°
79°
3
90°
80°
4
90°
80°
5
89°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San José del Cabo
San José del Cabo's August 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 77° and 80°. The average high for August is 89° with an average low of 79°. 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 José del Cabo. See also: September | October | November.