S
M
T
W
T
F
S
29
42°
32°
30
42°
32°
1
41°
31°
2
42°
31°
3
42°
30°
4
40°
29°
5
39°
27°
6
37°
26°
7
34°
24°
8
34°
26°
9
31°
30°
10
37°
31°
11
39°
30°
12
40°
30°
13
40°
29°
14
39°
30°
15
38°
29°
16
38°
29°
17
39°
27°
18
36°
26°
19
35°
25°
20
35°
27°
21
37°
28°
22
41°
30°
23
41°
29°
24
Hist. Avg.
29°
22°
25
Hist. Avg.
29°
22°
26
Hist. Avg.
29°
22°
27
Hist. Avg.
29°
21°
28
Hist. Avg.
29°
21°
29
Hist. Avg.
29°
21°
30
Hist. Avg.
29°
21°
31
Hist. Avg.
28°
21°
1
Hist. Avg.
28°
20°
2
Hist. Avg.
28°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Hanko
Hanko's December 2026 forecast shows daily high temperatures ranging from 31° to 42°, with overnight lows between 24° and 32°. The average high for December is 38° with an average low of 29°. 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 Hanko. See also: January | February | March.