S
M
T
W
T
F
S
30
68°
51°
31
69°
51°
1
67°
50°
2
66°
49°
3
66°
50°
4
68°
52°
5
67°
55°
6
68°
50°
7
67°
49°
8
65°
50°
9
65°
48°
10
66°
53°
11
66°
50°
12
65°
48°
13
67°
48°
14
66°
47°
15
64°
46°
16
64°
46°
17
65°
47°
18
64°
51°
19
67°
53°
20
67°
51°
21
69°
51°
22
68°
50°
23
64°
49°
24
66°
46°
25
60°
43°
26
62°
45°
27
65°
44°
28
63°
43°
29
58°
43°
30
57°
41°
1
Hist. Avg.
60°
44°
2
Hist. Avg.
60°
43°
3
Hist. Avg.
59°
43°
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 57° to 69°, with overnight lows between 41° and 55°. The average high for September is 65° with an average low of 48°. 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.
