S
M
T
W
T
F
S
26
91°
76°
27
91°
75°
28
91°
77°
29
91°
77°
30
91°
79°
31
N/A
1
89°
79°
2
88°
80°
3
89°
79°
4
89°
79°
5
89°
78°
6
91°
79°
7
91°
79°
8
90°
78°
9
91°
79°
10
90°
78°
11
90°
79°
12
91°
80°
13
89°
79°
14
88°
79°
15
88°
80°
16
89°
79°
17
88°
79°
18
88°
78°
19
89°
78°
20
88°
77°
21
88°
80°
22
89°
79°
23
88°
78°
24
88°
80°
25
89°
80°
26
89°
78°
27
88°
79°
28
89°
79°
29
88°
78°
30
88°
79°
31
89°
79°
1
89°
78°
2
88°
79°
3
89°
79°
4
88°
78°
5
90°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Guayama
Guayama's August 2026 forecast shows daily high temperatures ranging from 88° to 91°, 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 Guayama. See also: September | October | November.
