S
M
T
W
T
F
S
26
80°
66°
27
83°
67°
28
82°
66°
29
77°
66°
30
77°
65°
1
78°
67°
2
80°
65°
3
76°
66°
4
77°
67°
5
78°
66°
6
78°
68°
7
79°
68°
8
78°
67°
9
78°
68°
10
77°
68°
11
79°
69°
12
80°
69°
13
82°
70°
14
85°
69°
15
81°
65°
16
80°
65°
17
83°
69°
18
84°
70°
19
86°
70°
20
85°
68°
21
86°
67°
22
83°
68°
23
84°
71°
24
85°
71°
25
87°
72°
26
88°
72°
27
89°
73°
28
89°
72°
29
88°
73°
30
89°
74°
31
90°
74°
1
90°
73°
2
89°
72°
3
90°
74°
4
90°
73°
5
87°
73°
6
90°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fernandina Beach
Fernandina Beach's May 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 65° and 74°. The average high for May is 83° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Fernandina Beach. See also: June | July | August.