S
M
T
W
T
F
S
30
90°
74°
31
N/A
1
91°
75°
2
90°
77°
3
91°
78°
4
89°
77°
5
90°
78°
6
90°
76°
7
87°
77°
8
88°
78°
9
89°
77°
10
88°
78°
11
89°
75°
12
88°
76°
13
89°
74°
14
88°
75°
15
89°
76°
16
85°
77°
17
85°
77°
18
86°
76°
19
87°
76°
20
87°
75°
21
86°
76°
22
85°
75°
23
85°
75°
24
86°
74°
25
85°
76°
26
86°
75°
27
85°
76°
28
85°
76°
29
86°
75°
30
85°
75°
1
85°
74°
2
86°
75°
3
85°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dunedin
Dunedin's September 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 74° and 78°. The average high for September is 87° with an average low of 76°. 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 Dunedin. See also: October | November | December.
