S
M
T
W
T
F
S
30
53°
41°
31
56°
42°
1
57°
42°
2
56°
42°
3
57°
40°
4
56°
37°
5
54°
41°
6
54°
41°
7
55°
42°
8
56°
38°
9
56°
39°
10
55°
38°
11
55°
37°
12
56°
43°
13
57°
40°
14
56°
42°
15
57°
43°
16
58°
44°
17
60°
45°
18
59°
40°
19
59°
39°
20
Hist. Avg.
58°
41°
21
Hist. Avg.
58°
41°
22
Hist. Avg.
58°
41°
23
Hist. Avg.
59°
41°
24
Hist. Avg.
59°
41°
25
Hist. Avg.
59°
42°
26
Hist. Avg.
59°
42°
27
Hist. Avg.
59°
42°
28
Hist. Avg.
59°
42°
29
Hist. Avg.
60°
42°
30
Hist. Avg.
60°
42°
1
Hist. Avg.
60°
42°
2
Hist. Avg.
60°
42°
3
Hist. Avg.
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Christchurch
Christchurch's September 2026 forecast shows daily high temperatures ranging from 53° to 60°, with overnight lows between 37° and 45°. The average high for September is 56° with an average low of 41°. 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 Christchurch. See also: October | November | December.
