S
M
T
W
T
F
S
29
71°
63°
30
75°
59°
31
77°
61°
1
76°
60°
2
78°
61°
3
80°
66°
4
80°
65°
5
82°
66°
6
72°
64°
7
67°
63°
8
74°
63°
9
70°
65°
10
74°
65°
11
74°
61°
12
77°
55°
13
77°
59°
14
78°
58°
15
79°
60°
16
80°
58°
17
84°
60°
18
84°
61°
19
89°
67°
20
73°
64°
21
77°
60°
22
76°
60°
23
77°
63°
24
80°
63°
25
84°
65°
26
86°
65°
27
84°
67°
28
88°
68°
29
85°
67°
30
86°
66°
1
84°
68°
2
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Augustine Beach
St. Augustine Beach's April 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 60° and 68°. The average high for April is 83° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in St. Augustine Beach. See also: May | June | July.