S
M
T
W
T
F
S
26
89°
80°
27
88°
78°
28
91°
78°
29
91°
77°
30
90°
78°
31
92°
78°
1
92°
77°
2
90°
77°
3
88°
76°
4
89°
77°
5
91°
77°
6
89°
76°
7
90°
77°
8
89°
76°
9
92°
77°
10
92°
77°
11
90°
76°
12
89°
77°
13
88°
77°
14
88°
76°
15
89°
76°
16
87°
75°
17
86°
76°
18
87°
76°
19
86°
75°
20
86°
77°
21
87°
77°
22
88°
76°
23
87°
76°
24
89°
75°
25
90°
75°
26
90°
73°
27
89°
74°
28
90°
73°
29
89°
74°
30
89°
75°
31
90°
76°
1
90°
76°
2
88°
75°
3
88°
76°
4
87°
76°
5
88°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fernandina Beach
Fernandina Beach's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 73° and 80°. The average high for August is 89° with an average low of 76°. 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 Fernandina Beach. See also: September | October | November.
