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
86°
64°
7
93°
71°
8
79°
69°
9
82°
68°
10
81°
70°
11
88°
73°
12
77°
71°
13
84°
71°
14
88°
68°
15
81°
61°
16
85°
73°
17
85°
75°
18
83°
72°
19
85°
71°
20
84°
70°
21
85°
74°
22
87°
75°
23
86°
75°
24
87°
73°
25
87°
72°
26
88°
73°
27
87°
72°
28
88°
72°
29
86°
71°
30
87°
72°
31
86°
70°
1
87°
69°
2
88°
72°
3
88°
71°
4
85°
72°
5
86°
73°
6
86°
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 84° to 88°, with overnight lows between 69° and 75°. The average high for May is 86° with an average low of 72°. 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.
