S
M
T
W
T
F
S
30
64°
41°
1
67°
58°
2
67°
51°
3
57°
41°
4
47°
35°
5
52°
36°
6
54°
35°
7
60°
37°
8
59°
44°
9
55°
42°
10
56°
38°
11
61°
41°
12
56°
42°
13
52°
35°
14
56°
46°
15
51°
41°
16
56°
36°
17
54°
40°
18
54°
42°
19
59°
35°
20
66°
47°
21
58°
51°
22
51°
42°
23
57°
35°
24
57°
48°
25
55°
49°
26
49°
36°
27
47°
33°
28
51°
36°
29
56°
34°
30
56°
42°
31
49°
37°
1
47°
36°
2
45°
34°
3
46°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Osaka
Osaka's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Osaka. See also: January | February | March.