Current sea water temperature:
+69.8°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 7 | 69.8°F | June 1 | 70.0°F |
| June 6 | 69.8°F | May 31 | 69.6°F |
| June 5 | 70.2°F | May 30 | 69.1°F |
| June 4 | 70.0°F | May 29 | 70.2°F |
| June 3 | 70.2°F | May 28 | 68.9°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
June
June
| Hakone |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 19:14
June 07, sunday
2100
64°F
SW
4 mph
4 mph
June 08, monday
0000
64°F
SW
6 mph
6 mph
0300
66°F
SW
7 mph
7 mph
0600
66°F
SW
11 mph
11 mph
0900
68°F
S
11 mph
11 mph
1200
73°F
SW
9 mph
9 mph
1500
73°F
W
4 mph
4 mph
1800
70°F
NE
4 mph
4 mph
