S
M
T
W
T
F
S
28
54°
31°
29
54°
38°
30
60°
37°
31
56°
39°
1
51°
39°
2
50°
33°
3
48°
31°
4
52°
34°
5
55°
34°
6
52°
38°
7
44°
36°
8
52°
31°
9
51°
35°
10
58°
35°
11
61°
42°
12
49°
32°
13
61°
32°
14
54°
39°
15
54°
35°
16
64°
41°
17
60°
41°
18
56°
43°
19
57°
41°
20
50°
38°
21
45°
35°
22
44°
32°
23
49°
28°
24
52°
30°
25
46°
34°
26
47°
30°
27
50°
36°
28
47°
36°
29
51°
34°
30
49°
31°
31
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Shinjuku-ku
Shinjuku-ku's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January 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 January weather will actually feel in Shinjuku-ku. See also: February | March | April.
