S
M
T
W
T
F
S
30
58°
47°
31
57°
46°
1
56°
43°
2
55°
43°
3
56°
45°
4
55°
44°
5
56°
46°
6
55°
48°
7
59°
48°
8
57°
47°
9
59°
48°
10
59°
49°
11
58°
46°
12
59°
45°
13
56°
44°
14
56°
49°
15
59°
45°
16
60°
45°
17
56°
46°
18
57°
50°
19
59°
49°
20
61°
47°
21
57°
49°
22
61°
47°
23
59°
50°
24
57°
50°
25
61°
51°
26
61°
45°
27
60°
45°
28
57°
50°
29
58°
46°
30
60°
45°
1
58°
46°
2
57°
45°
3
58°
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 55° to 61°, with overnight lows between 43° and 51°. The average high for September is 58° with an average low of 47°. 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.
