S
M
T
W
T
F
S
30
88°
57°
31
80°
60°
1
81°
64°
2
84°
56°
3
85°
61°
4
85°
64°
5
87°
61°
6
87°
55°
7
78°
55°
8
78°
54°
9
79°
60°
10
84°
60°
11
84°
57°
12
79°
56°
13
76°
54°
14
77°
60°
15
82°
58°
16
84°
52°
17
77°
51°
18
74°
51°
19
74°
52°
20
75°
51°
21
72°
50°
22
72°
50°
23
73°
51°
24
73°
56°
25
77°
56°
26
78°
55°
27
79°
50°
28
77°
56°
29
76°
55°
30
75°
54°
1
71°
52°
2
72°
47°
3
69°
46°
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 88°, with overnight lows between 46° and 64°. The average high for September is 78° with an average low of 55°. 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.
