Current sea water temperature:
+78.3°F
| Minimum sea water temperature in July: | 82.9°F |
| Maximum sea water temperature in July: | 70.0°F |
| Average sea water temperature in July: | 76.7°F |
| more information | |
14 days
forecast
forecast
| Hakone |
monthly
weather
weather
| Hakone |
Sea water temperature for the last 10 days:
| July 18 | 78.3°F | July 13 | 77.9°F |
| July 17 | 78.3°F | July 12 | 77.0°F |
| July 16 | 78.4°F | July 11 | 77.2°F |
| July 15 | 77.9°F | July 10 | 75.2°F |
| July 14 | 77.0°F | July 9 | 74.1°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:
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:
2026
2025
2024
The average sea water temperature in July of 2026 was 75.8°F. The highest and lowest sea temperatures during the month were 78.4°F and 73.0°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: 18:46
July 18, saturday
2100
77°F
N
4 mph
4 mph
July 19, sunday
0000
75°F
N
4 mph
4 mph
0300
75°F
NE
4 mph
4 mph
0600
77°F
NE
2 mph
2 mph
0900
82°F
N
6 mph
6 mph
1200
82°F
N
9 mph
9 mph
1500
82°F
N
9 mph
9 mph
1800
81°F
N
6 mph
6 mph
