S
M
T
W
T
F
S
26
93°
78°
27
91°
76°
28
88°
79°
29
89°
78°
30
89°
79°
31
90°
79°
1
89°
78°
2
90°
79°
3
89°
79°
4
88°
78°
5
88°
79°
6
89°
79°
7
90°
78°
8
89°
78°
9
88°
79°
10
90°
79°
11
89°
78°
12
88°
79°
13
88°
78°
14
89°
78°
15
86°
78°
16
87°
78°
17
87°
78°
18
88°
78°
19
88°
78°
20
87°
78°
21
88°
78°
22
88°
78°
23
90°
78°
24
90°
76°
25
89°
76°
26
88°
77°
27
89°
76°
28
88°
75°
29
89°
76°
30
88°
76°
31
91°
77°
1
91°
76°
2
90°
77°
3
90°
77°
4
89°
76°
5
90°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cayo Costa
Cayo Costa's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 75° and 79°. The average high for August is 89° with an average low of 78°. 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 Cayo Costa. See also: September | October | November.
