Current sea water temperature:
+65.3°F
| Minimum sea water temperature in April: | 67.1°F |
| Maximum sea water temperature in April: | 55.9°F |
| Average sea water temperature in April: | 61.1°F |
| more information | |
14 days
forecast
forecast
| Hakone |
monthly
weather
weather
| Hakone |
Sea water temperature for the last 10 days:
| April 27 | 65.3°F | April 22 | 64.2°F |
| April 26 | 64.9°F | April 21 | 64.0°F |
| April 25 | 65.3°F | April 20 | 63.5°F |
| April 24 | 64.6°F | April 19 | 63.0°F |
| April 23 | 64.9°F | April 18 | 63.3°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
May
May
| Hakone |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 10:55
April 28, tuesday
1200
68°F
NE
11 mph
11 mph
1500
70°F
NE
14 mph
14 mph
1800
64°F
NE
15 mph
15 mph
2100
64°F
NE
14 mph
14 mph
April 29, wednesday
0000
64°F
NE
13 mph
13 mph
0300
63°F
E
4 mph
4 mph
0600
63°F
S
3 mph
3 mph
0900
66°F
SW
7 mph
7 mph
