S
M
T
W
T
F
S
30
63°
60°
31
66°
60°
1
66°
61°
2
64°
59°
3
65°
54°
4
67°
54°
5
68°
53°
6
70°
55°
7
68°
55°
8
70°
55°
9
71°
57°
10
70°
55°
11
68°
54°
12
67°
54°
13
69°
54°
14
68°
55°
15
70°
56°
16
69°
49°
17
65°
53°
18
65°
50°
19
64°
53°
20
63°
52°
21
64°
52°
22
63°
51°
23
63°
48°
24
62°
46°
25
62°
46°
26
64°
50°
27
69°
51°
28
69°
51°
29
68°
50°
30
67°
50°
1
68°
51°
2
68°
51°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Nanaimo
Nanaimo's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 46° and 57°. The average high for September is 67° with an average low of 52°. 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 Nanaimo. See also: October | November | December.
