S
M
T
W
T
F
S
30
91°
81°
31
91°
78°
1
89°
75°
2
90°
76°
3
93°
77°
4
91°
78°
5
92°
76°
6
92°
76°
7
92°
74°
8
92°
78°
9
90°
79°
10
91°
73°
11
88°
78°
12
93°
78°
13
92°
76°
14
90°
77°
15
93°
80°
16
92°
78°
17
88°
77°
18
87°
75°
19
87°
77°
20
88°
78°
21
86°
78°
22
87°
77°
23
86°
76°
24
85°
77°
25
83°
78°
26
87°
77°
27
85°
77°
28
86°
76°
29
85°
78°
30
84°
76°
1
84°
78°
2
86°
79°
3
87°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port of Miami
Port of Miami's September 2026 forecast shows daily high temperatures ranging from 83° to 88°, with overnight lows between 75° and 79°. The average high for September is 86° with an average low of 77°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Port of Miami. See also: October | November | December.
