Current sea water temperature:
+72.3°F
| Minimum sea water temperature in June: | 78.1°F |
| Maximum sea water temperature in June: | 66.6°F |
| Average sea water temperature in June: | 70.7°F |
| more information | |
14 days
forecast
forecast
| Hakone |
monthly
weather
weather
| Hakone |
Sea water temperature for the last 10 days:
| June 27 | 72.3°F | June 22 | 73.4°F |
| June 26 | 72.7°F | June 21 | 73.4°F |
| June 25 | 73.6°F | June 20 | 72.7°F |
| June 24 | 73.2°F | June 19 | 72.9°F |
| June 23 | 73.4°F | June 18 | 72.5°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
July
July
| Hakone |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 06:42
June 28, sunday
0900
73°F
E
2 mph
2 mph
1200
73°F
SW
5 mph
5 mph
1500
73°F
SW
7 mph
7 mph
1800
72°F
SW
6 mph
6 mph
2100
70°F
S
6 mph
6 mph
June 29, monday
0000
70°F
SW
4 mph
4 mph
0300
70°F
SW
2 mph
2 mph
0600
70°F
SW
2 mph
2 mph
