19.12
fri
fri
Day
52°F
W 3 mph
Precip.
0%
0%
Night
50°F
E 2 mph
Precip.
0%
0%
20.12
sat
sat
Day
57°F
NE 6 mph
Precip.
100%
100%
Night
55°F
E 4 mph
Precip.
100%
100%
21.12
sun
sun
Day
63°F
NE 11 mph
Precip.
0%
0%
Night
57°F
SW 5 mph
Precip.
71%
71%
22.12
mon
mon
Day
50°F
SW 8 mph
Precip.
0%
0%
Night
46°F
SW 9 mph
Precip.
0%
0%
23.12
tue
tue
Day
48°F
SW 7 mph
Precip.
0%
0%
Night
48°F
S 6 mph
Precip.
0%
0%
24.12
wed
wed
Day
55°F
NE 6 mph
Precip.
81%
81%
Night
54°F
S 6 mph
Precip.
73%
73%
25.12
thu
thu
Day
50°F
SW 9 mph
Precip.
0%
0%
Night
46°F
SW 11 mph
Precip.
0%
0%
26.12
fri
fri
Day
46°F
SW 9 mph
Precip.
0%
0%
Night
41°F
S 6 mph
Precip.
0%
0%
27.12
sat
sat
Day
48°F
SW 7 mph
Precip.
0%
0%
Night
46°F
S 12 mph
Precip.
100%
100%
28.12
sun
sun
Day
54°F
E 5 mph
Precip.
0%
0%
Night
45°F
SE 6 mph
Precip.
0%
0%
29.12
mon
mon
Day
55°F
W 3 mph
Precip.
89%
89%
Night
48°F
S 7 mph
Precip.
100%
100%
30.12
tue
tue
Day
50°F
SW 11 mph
Precip.
0%
0%
Night
46°F
S 16 mph
Precip.
100%
100%
31.12
wed
wed
Day
50°F
S 5 mph
Precip.
0%
0%
Night
43°F
SE 4 mph
Precip.
0%
0%
01.01
thu
thu
Day
52°F
N 4 mph
Precip.
83%
83%
Night
48°F
S 4 mph
Precip.
65%
65%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 66.3°F. The highest and lowest sea temperatures during the month were 68.9°F and 64.0°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 61.0°F. The highest and lowest sea temperatures during the month were 62.6°F and 59.9°F.
Air temperature in Hakone, °F
Precipitation total in Hakone, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 10:48
December 19, friday
1200
52°F
W
3 mph
3 mph
1500
54°F
NW
3 mph
3 mph
1800
50°F
E
2 mph
2 mph
2100
48°F
E
4 mph
4 mph
December 20, saturday
0000
50°F
E
2 mph
2 mph
0300
50°F
SE
2 mph
2 mph
0600
52°F
E
2 mph
2 mph
0900
54°F
E
6 mph
6 mph
