S
M
T
W
T
F
S
26
88°
80°
27
87°
80°
28
88°
80°
29
90°
81°
30
90°
80°
31
89°
81°
1
90°
81°
2
90°
80°
3
89°
80°
4
87°
81°
5
86°
80°
6
87°
80°
7
88°
79°
8
90°
80°
9
90°
79°
10
89°
78°
11
88°
79°
12
90°
78°
13
90°
80°
14
89°
80°
15
89°
79°
16
88°
79°
17
88°
78°
18
87°
79°
19
88°
79°
20
88°
78°
21
90°
79°
22
90°
78°
23
89°
78°
24
89°
79°
25
88°
78°
26
89°
77°
27
90°
77°
28
87°
78°
29
88°
79°
30
89°
78°
31
88°
79°
1
87°
78°
2
87°
78°
3
88°
80°
4
89°
79°
5
88°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Miami Beach
Miami Beach's August 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 77° and 81°. The average high for August is 89° with an average low of 79°. 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 Miami Beach. See also: September | October | November.
