S
M
T
W
T
F
S
26
92°
76°
27
90°
76°
28
94°
77°
29
95°
77°
30
89°
75°
31
88°
73°
1
90°
74°
2
88°
73°
3
87°
73°
4
88°
74°
5
90°
74°
6
88°
73°
7
89°
75°
8
88°
73°
9
87°
74°
10
87°
75°
11
87°
75°
12
88°
74°
13
87°
75°
14
90°
75°
15
91°
74°
16
89°
75°
17
87°
75°
18
87°
74°
19
88°
75°
20
86°
75°
21
86°
74°
22
87°
75°
23
86°
74°
24
87°
75°
25
91°
76°
26
90°
75°
27
90°
75°
28
89°
74°
29
90°
75°
30
91°
75°
31
91°
74°
1
90°
75°
2
90°
75°
3
88°
74°
4
85°
75°
5
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Augustine Beach
St. Augustine Beach's August 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 73° and 77°. The average high for August is 89° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in St. Augustine Beach. See also: September | October | November.
