S
M
T
W
T
F
S
30
90°
76°
31
89°
76°
1
91°
76°
2
90°
75°
3
94°
79°
4
94°
79°
5
89°
76°
6
93°
75°
7
91°
75°
8
91°
74°
9
89°
78°
10
91°
79°
11
87°
77°
12
89°
76°
13
91°
75°
14
91°
78°
15
90°
79°
16
89°
79°
17
89°
78°
18
90°
77°
19
89°
76°
20
88°
75°
21
88°
76°
22
87°
77°
23
88°
76°
24
89°
75°
25
86°
78°
26
85°
78°
27
84°
77°
28
85°
78°
29
85°
78°
30
86°
77°
1
85°
78°
2
85°
77°
3
86°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wellington
Wellington's September 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 75° and 79°. The average high for September is 87° 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 Wellington. See also: October | November | December.
