S
M
T
W
T
F
S
26
82°
64°
27
83°
63°
28
82°
63°
29
82°
64°
30
84°
65°
1
82°
65°
2
83°
64°
3
79°
65°
4
79°
65°
5
80°
66°
6
79°
65°
7
79°
64°
8
82°
66°
9
80°
66°
10
85°
67°
11
86°
67°
12
86°
68°
13
85°
68°
14
86°
67°
15
84°
66°
16
83°
67°
17
84°
67°
18
86°
68°
19
87°
67°
20
88°
65°
21
84°
67°
22
84°
67°
23
85°
68°
24
84°
66°
25
86°
65°
26
84°
66°
27
87°
67°
28
88°
70°
29
88°
69°
30
87°
67°
31
85°
67°
1
84°
66°
2
85°
69°
3
87°
68°
4
86°
68°
5
90°
69°
6
87°
69°
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 79° to 90°, with overnight lows between 63° and 70°. The average high for May is 84° with an average low of 66°. 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.
