27.12
sat
sat
Day
41°F
NW 5 mph
Precip.
87%
87%
Night
39°F
S 6 mph
Precip.
0%
0%
28.12
sun
sun
Day
50°F
N 6 mph
Precip.
0%
0%
Night
39°F
E 7 mph
Precip.
0%
0%
29.12
mon
mon
Day
54°F
NE 11 mph
Precip.
0%
0%
Night
46°F
E 14 mph
Precip.
0%
0%
30.12
tue
tue
Day
55°F
E 1 mph
Precip.
0%
0%
Night
46°F
S 8 mph
Precip.
0%
0%
31.12
wed
wed
Day
48°F
SW 8 mph
Precip.
0%
0%
Night
43°F
S 6 mph
Precip.
0%
0%
01.01
thu
thu
Day
52°F
NW 2 mph
Precip.
0%
0%
Night
43°F
S 5 mph
Precip.
0%
0%
02.01
fri
fri
Day
48°F
SW 9 mph
Precip.
0%
0%
Night
43°F
SW 6 mph
Precip.
66%
66%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 65.7°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: 07:18
December 27, saturday
0900
39°F
W
3 mph
3 mph
1200
41°F
NW
5 mph
5 mph
1500
41°F
N
5 mph
5 mph
1800
41°F
NE
1 mph
1 mph
2100
39°F
S
6 mph
6 mph
December 28, sunday
0000
39°F
S
6 mph
6 mph
0300
37°F
S
4 mph
4 mph
0600
36°F
SE
4 mph
4 mph
