S
M
T
W
T
F
S
26
80°
66°
27
72°
67°
28
80°
67°
29
90°
64°
30
87°
70°
1
85°
69°
2
76°
61°
3
73°
58°
4
76°
59°
5
78°
59°
6
81°
70°
7
91°
72°
8
79°
72°
9
79°
70°
10
85°
70°
11
86°
66°
12
78°
64°
13
84°
67°
14
88°
71°
15
88°
70°
16
87°
70°
17
87°
71°
18
88°
70°
19
86°
66°
20
83°
69°
21
86°
70°
22
86°
70°
23
85°
69°
24
82°
70°
25
83°
70°
26
83°
69°
27
84°
71°
28
82°
71°
29
83°
70°
30
82°
71°
31
81°
71°
1
83°
72°
2
84°
72°
3
85°
71°
4
84°
72°
5
84°
72°
6
85°
73°
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 78° to 91°, with overnight lows between 64° and 73°. The average high for May is 84° with an average low of 70°. 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.
