S
M
T
W
T
F
S
26
94°
78°
27
92°
75°
28
90°
81°
29
91°
80°
30
92°
81°
31
90°
80°
1
89°
79°
2
88°
81°
3
88°
80°
4
90°
81°
5
88°
81°
6
87°
79°
7
88°
80°
8
87°
79°
9
86°
78°
10
86°
80°
11
87°
79°
12
87°
80°
13
86°
80°
14
86°
79°
15
87°
80°
16
86°
80°
17
87°
79°
18
86°
80°
19
86°
80°
20
87°
79°
21
86°
80°
22
89°
80°
23
88°
79°
24
86°
78°
25
87°
80°
26
87°
80°
27
88°
79°
28
87°
80°
29
87°
80°
30
88°
79°
31
88°
80°
1
89°
80°
2
89°
79°
3
88°
80°
4
88°
80°
5
86°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Miami
Miami's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 78° and 81°. The average high for August is 88° with an average low of 80°. 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. See also: September | October | November.
