S
M
T
W
T
F
S
26
88°
76°
27
91°
74°
28
91°
74°
29
90°
75°
30
91°
74°
31
89°
74°
1
88°
74°
2
89°
76°
3
90°
75°
4
91°
74°
5
89°
75°
6
89°
75°
7
88°
73°
8
88°
73°
9
90°
74°
10
88°
74°
11
90°
75°
12
88°
74°
13
88°
74°
14
89°
75°
15
88°
74°
16
90°
75°
17
90°
74°
18
89°
74°
19
87°
73°
20
88°
75°
21
90°
74°
22
90°
74°
23
87°
75°
24
86°
74°
25
87°
73°
26
87°
73°
27
86°
74°
28
89°
74°
29
86°
75°
30
85°
74°
31
85°
73°
1
86°
72°
2
85°
72°
3
85°
73°
4
86°
72°
5
87°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jekyll Island
Jekyll Island's August 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 72° and 76°. The average high for August is 88° with an average low of 74°. 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 Jekyll Island. See also: September | October | November.
