S
M
T
W
T
F
S
30
74°
54°
31
76°
61°
1
79°
61°
2
75°
62°
3
81°
60°
4
79°
51°
5
75°
55°
6
74°
52°
7
74°
53°
8
79°
57°
9
79°
58°
10
81°
54°
11
73°
51°
12
72°
56°
13
75°
50°
14
77°
49°
15
69°
53°
16
70°
54°
17
69°
53°
18
70°
48°
19
75°
47°
20
69°
52°
21
73°
47°
22
70°
53°
23
73°
51°
24
76°
53°
25
76°
53°
26
75°
52°
27
74°
54°
28
76°
52°
29
74°
46°
30
69°
50°
1
73°
53°
2
75°
45°
3
73°
42°
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 69° to 81°, with overnight lows between 42° and 62°. The average high for September is 74° with an average low of 53°. 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.
