S
M
T
W
T
F
S
26
88°
78°
27
89°
78°
28
88°
77°
29
88°
78°
30
89°
78°
31
89°
77°
1
88°
79°
2
89°
79°
3
89°
78°
4
88°
79°
5
89°
78°
6
86°
78°
7
88°
79°
8
89°
78°
9
88°
79°
10
88°
79°
11
89°
78°
12
89°
79°
13
88°
79°
14
89°
78°
15
88°
77°
16
89°
79°
17
89°
78°
18
88°
79°
19
86°
79°
20
89°
77°
21
88°
78°
22
89°
79°
23
88°
79°
24
89°
78°
25
88°
78°
26
87°
78°
27
90°
78°
28
Hist. Avg.
90°
73°
29
Hist. Avg.
90°
73°
30
Hist. Avg.
90°
73°
31
Hist. Avg.
90°
73°
1
Hist. Avg.
90°
73°
2
Hist. Avg.
90°
73°
3
Hist. Avg.
90°
73°
4
Hist. Avg.
90°
73°
5
Hist. Avg.
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Montego Bay
Montego Bay's August 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 77° and 79°. The average high for August is 88° 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 Montego Bay. See also: September | October | November.