Current sea water temperature:
+63.9°F
| Minimum sea water temperature in January: | 65.3°F |
| Maximum sea water temperature in January: | 57.0°F |
| Average sea water temperature in January: | 60.5°F |
| more information | |
14 days
forecast
forecast
| Hakone |
monthly
weather
weather
| Hakone |
Sea water temperature for the last 10 days:
| January 1 | 63.9°F | December 27 | 64.8°F |
| December 31 | 64.0°F | December 26 | 64.2°F |
| December 30 | 64.6°F | December 25 | 64.2°F |
| December 29 | 64.9°F | December 24 | 64.2°F |
| December 28 | 64.6°F | December 23 | 64.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Hakone?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hakone was noticed in August, September and July.
Monthly Sea Temperatures in Hakone, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 82.8°F and 79.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 79.4°F. The highest and lowest sea temperatures during the month were 81.9°F and 75.7°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 80.0°F. The highest and lowest sea temperatures during the month were 82.4°F and 77.0°F.
current
weather
weather
| Hakone |
weather in
January
January
| Hakone |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 10:29
January 02, friday
1200
45°F
N
5 mph
5 mph
1500
46°F
NE
16 mph
16 mph
1800
43°F
NE
16 mph
16 mph
2100
36°F
S
11 mph
11 mph
January 03, saturday
0000
36°F
S
11 mph
11 mph
0300
34°F
SE
4 mph
4 mph
0600
32°F
E
7 mph
7 mph
0900
41°F
E
5 mph
5 mph
