S
M
T
W
T
F
S
29
47°
33°
30
49°
32°
1
43°
36°
2
46°
38°
3
46°
30°
4
45°
29°
5
41°
28°
6
38°
29°
7
37°
31°
8
38°
31°
9
41°
33°
10
43°
34°
11
41°
35°
12
41°
34°
13
42°
27°
14
41°
28°
15
38°
29°
16
39°
33°
17
39°
36°
18
46°
31°
19
45°
26°
20
40°
28°
21
37°
27°
22
38°
33°
23
38°
35°
24
42°
38°
25
44°
37°
26
45°
34°
27
45°
35°
28
44°
34°
29
43°
35°
30
43°
28°
31
44°
27°
1
39°
28°
2
40°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Nanaimo
Nanaimo's December 2026 forecast shows daily high temperatures ranging from 37° to 49°, with overnight lows between 26° and 38°. The average high for December is 42° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Nanaimo. See also: January | February | March.
