S
M
T
W
T
F
S
26
89°
76°
27
92°
75°
28
92°
74°
29
90°
75°
30
91°
74°
31
92°
75°
1
93°
74°
2
91°
74°
3
90°
75°
4
91°
74°
5
90°
75°
6
89°
74°
7
88°
74°
8
88°
75°
9
89°
74°
10
89°
74°
11
90°
75°
12
88°
74°
13
89°
75°
14
91°
76°
15
92°
75°
16
91°
76°
17
90°
75°
18
87°
75°
19
88°
74°
20
87°
73°
21
88°
74°
22
88°
74°
23
87°
75°
24
88°
73°
25
88°
76°
26
90°
76°
27
88°
75°
28
86°
75°
29
87°
77°
30
90°
74°
31
90°
73°
1
87°
73°
2
86°
74°
3
86°
73°
4
87°
73°
5
87°
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 93°, with overnight lows between 73° and 77°. The average high for August is 89° with an average low of 75°. 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.
