S
M
T
W
T
F
S
30
91°
74°
31
91°
75°
1
90°
75°
2
90°
76°
3
88°
76°
4
88°
75°
5
90°
76°
6
90°
76°
7
88°
75°
8
88°
75°
9
89°
76°
10
88°
75°
11
89°
74°
12
88°
75°
13
88°
75°
14
89°
74°
15
90°
76°
16
91°
75°
17
88°
74°
18
87°
73°
19
88°
73°
20
91°
76°
21
90°
75°
22
90°
76°
23
89°
75°
24
89°
74°
25
90°
73°
26
88°
72°
27
86°
73°
28
87°
72°
29
86°
71°
30
86°
72°
1
85°
71°
2
86°
72°
3
87°
73°
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 71° and 76°. The average high for September is 89° with an average low of 74°. 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.
