S
M
T
W
T
F
S
30
78°
58°
31
79°
61°
1
79°
61°
2
77°
60°
3
83°
62°
4
84°
59°
5
77°
53°
6
78°
52°
7
77°
55°
8
83°
59°
9
83°
58°
10
81°
58°
11
76°
50°
12
76°
52°
13
78°
57°
14
82°
51°
15
74°
52°
16
73°
53°
17
72°
50°
18
73°
51°
19
77°
47°
20
73°
50°
21
76°
50°
22
77°
54°
23
78°
51°
24
78°
48°
25
77°
53°
26
77°
54°
27
76°
54°
28
76°
53°
29
77°
50°
30
71°
51°
1
75°
53°
2
76°
50°
3
75°
47°
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 71° to 84°, with overnight lows between 47° and 62°. The average high for September is 77° with an average low of 54°. 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.
