S
M
T
W
T
F
S
26
92°
79°
27
91°
79°
28
92°
78°
29
91°
79°
30
90°
79°
31
90°
78°
1
91°
79°
2
91°
79°
3
89°
78°
4
87°
79°
5
88°
78°
6
88°
76°
7
91°
76°
8
92°
77°
9
91°
77°
10
90°
76°
11
92°
77°
12
91°
78°
13
92°
78°
14
92°
77°
15
91°
77°
16
91°
76°
17
89°
76°
18
88°
77°
19
88°
77°
20
89°
76°
21
91°
77°
22
92°
76°
23
91°
77°
24
91°
78°
25
90°
76°
26
91°
76°
27
91°
74°
28
88°
76°
29
88°
77°
30
89°
76°
31
88°
77°
1
89°
76°
2
88°
77°
3
89°
77°
4
88°
76°
5
88°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Captiva
Captiva's August 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 74° and 79°. The average high for August is 90° with an average low of 77°. 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 Captiva. See also: September | October | November.
