S
M
T
W
T
F
S
26
81°
62°
27
83°
68°
28
80°
71°
29
84°
69°
30
78°
68°
31
83°
68°
1
85°
70°
2
83°
75°
3
84°
71°
4
83°
66°
5
84°
74°
6
87°
77°
7
90°
76°
8
89°
75°
9
90°
78°
10
89°
78°
11
89°
74°
12
86°
72°
13
83°
71°
14
81°
69°
15
81°
70°
16
80°
69°
17
82°
70°
18
82°
71°
19
83°
74°
20
85°
70°
21
83°
67°
22
82°
71°
23
86°
74°
24
87°
74°
25
87°
73°
26
85°
73°
27
79°
72°
28
79°
73°
29
83°
71°
30
84°
72°
31
84°
72°
1
83°
67°
2
77°
65°
3
76°
65°
4
76°
64°
5
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jamaica
Jamaica's August 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 64° and 78°. The average high for August is 83° with an average low of 71°. 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 Jamaica. See also: September | October | November.