S
M
T
W
T
F
S
26
80°
66°
27
72°
67°
28
80°
67°
29
90°
64°
30
87°
70°
1
82°
69°
2
79°
62°
3
73°
63°
4
78°
63°
5
80°
67°
6
87°
70°
7
90°
67°
8
77°
60°
9
81°
64°
10
82°
66°
11
86°
68°
12
85°
69°
13
87°
68°
14
83°
67°
15
86°
68°
16
86°
69°
17
85°
69°
18
86°
68°
19
85°
69°
20
86°
69°
21
86°
70°
22
87°
70°
23
87°
69°
24
86°
71°
25
86°
71°
26
85°
70°
27
85°
70°
28
86°
71°
29
85°
71°
30
83°
70°
31
83°
71°
1
84°
71°
2
84°
72°
3
82°
72°
4
84°
71°
5
88°
72°
6
84°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Augustine Beach
St. Augustine Beach's May 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 60° and 72°. The average high for May is 84° 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 St. Augustine Beach. See also: June | July | August.
