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 65.8°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 | 75.5°F | 75.3°F |
| Nagasaki | 67.1°F | 64.1°F |
| Atami | 66.2°F | 65.8°F |
| Hakone | 65.8°F | 65.7°F |
| Kamakura | 65.7°F | 65.1°F |
| Fukuoka | 62.6°F | 62.2°F |
| Hiroshima | 61.9°F | 61.6°F |
| Kobe | 60.7°F | 60.1°F |
| Yokohama | 60.4°F | 60.4°F |
| Nagoya | 59.6°F | 60.7°F |
| Osaka | 59.6°F | 58.7°F |
| Nara | 59.1°F | 58.2°F |
| Tokyo | 58.4°F | 58.4°F |
| Kyoto | 57.3°F | 56.4°F |
| Noboribetsu | 49.6°F | 50.2°F |
| Sapporo | 45.0°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: 10:42
December 26, friday
1200
48°F
S
5 mph
5 mph
1500
46°F
SW
12 mph
12 mph
1800
43°F
SW
6 mph
6 mph
2100
41°F
W
6 mph
6 mph
December 27, saturday
0000
39°F
NW
6 mph
6 mph
0300
39°F
W
4 mph
4 mph
0600
37°F
W
2 mph
2 mph
0900
39°F
W
2 mph
2 mph
