Average sea water temperature in December:
+64.3°F
| Minimum sea water temperature in December: | 68.9°F |
| Maximum sea water temperature in December: | 58.3°F |
Daily 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.
Monthly sea water temperature in Hakone, °F
Which Japan resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Okinawa | 75.4°F | 75.3°F |
| Nagasaki | 67.1°F | 64.1°F |
| Atami | 66.2°F | 65.8°F |
| Hakone | 65.7°F | 65.7°F |
| Kamakura | 65.6°F | 65.1°F |
| Fukuoka | 62.5°F | 62.2°F |
| Hiroshima | 61.8°F | 61.6°F |
| Kobe | 60.6°F | 60.1°F |
| Yokohama | 60.3°F | 60.4°F |
| Nagoya | 59.6°F | 60.7°F |
| Osaka | 59.5°F | 58.7°F |
| Nara | 59.0°F | 58.2°F |
| Tokyo | 58.3°F | 58.4°F |
| Kyoto | 57.2°F | 56.4°F |
| Noboribetsu | 49.5°F | 50.2°F |
| Sapporo | 44.9°F | 45.2°F |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 07:26
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
