S
M
T
W
T
F
S
30
73°
53°
31
64°
48°
1
69°
52°
2
72°
49°
3
69°
50°
4
71°
53°
5
72°
46°
6
66°
42°
7
62°
41°
8
61°
40°
9
60°
40°
10
61°
40°
11
61°
40°
12
66°
43°
13
67°
42°
14
63°
44°
15
60°
39°
16
58°
37°
17
58°
38°
18
59°
38°
19
60°
43°
20
67°
46°
21
66°
46°
22
60°
36°
23
56°
40°
24
55°
37°
25
56°
43°
26
59°
43°
27
61°
42°
28
55°
40°
29
53°
38°
30
54°
41°
1
53°
43°
2
58°
32°
3
53°
31°
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 53° to 73°, with overnight lows between 31° and 53°. The average high for September is 62° with an average low of 42°. 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.
