S
M
T
W
T
F
S
26
90°
80°
27
91°
80°
28
90°
81°
29
90°
80°
30
89°
80°
31
88°
78°
1
88°
79°
2
89°
80°
3
88°
81°
4
89°
79°
5
88°
78°
6
89°
79°
7
90°
80°
8
89°
79°
9
89°
79°
10
90°
80°
11
87°
78°
12
88°
78°
13
87°
79°
14
87°
79°
15
88°
80°
16
88°
79°
17
86°
79°
18
87°
78°
19
87°
78°
20
86°
77°
21
86°
80°
22
87°
79°
23
87°
78°
24
86°
79°
25
87°
79°
26
86°
78°
27
87°
79°
28
88°
79°
29
87°
78°
30
87°
79°
31
88°
79°
1
88°
78°
2
87°
79°
3
87°
79°
4
86°
78°
5
88°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fajardo
Fajardo's August 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 77° and 81°. The average high for August is 88° 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 Fajardo. See also: September | October | November.