Current sea water temperature:
+81.3°F
| Minimum sea water temperature in August: | 84.9°F |
| Maximum sea water temperature in August: | 75.9°F |
| Average sea water temperature in August: | 80.5°F |
| more information | |
14 days
forecast
forecast
| Hakone |
monthly
weather
weather
| Hakone |
Sea water temperature for the last 10 days:
| August 28 | 81.3°F | August 23 | 80.6°F |
| August 27 | 81.3°F | August 22 | 80.8°F |
| August 26 | 81.9°F | August 21 | 81.3°F |
| August 25 | 81.5°F | August 20 | 81.0°F |
| August 24 | 81.1°F | August 19 | 80.1°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 81.2°F. The highest and lowest sea temperatures during the month were 82.0°F and 80.1°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 78.1°F. The highest and lowest sea temperatures during the month were 82.4°F and 73.0°F.
current
weather
weather
| Hakone |
weather in
September
September
| Hakone |
Best time for vacation in Hakone
Hakone on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hakone
Local time: 05:52
August 29, saturday
0600
75°F
SW
7 mph
7 mph
0900
77°F
SW
4 mph
4 mph
1200
75°F
SW
7 mph
7 mph
1500
73°F
SW
16 mph
16 mph
1800
70°F
S
16 mph
16 mph
2100
70°F
S
11 mph
11 mph
August 30, sunday
0000
70°F
S
10 mph
10 mph
0300
70°F
S
8 mph
8 mph
