About Lacus Marina
Lacus Marina is within an hour's reach of Tokyo and is blessed with a mild climate due to the mitigating effects of the surrounding climate, which is the water that moistens the vast Kasumigaura. In the summer, when the southeast monsoon crosses the water, it loses heat and gets cool, and in the winter, it is characterized by the mitigation effect of Kasumigaura, which makes it difficult for the temperature to drop. Hot springs also spring out on the premises of the marina, and taking advantage of these blessed environments, we are also developing camping facilities along with footbath hot springs. Various events are held in the vast and scenic Kasumigaura, and many customers visit on holidays.

Facilities
COORDINATES
36.08104 N, 140.21685 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m
Manoeuvrability
Good
Channel Marking
Excellent
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Floating
Style Side To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Mon
5AM - 9AM
18 May 2026
- Light and variable.
- Increasing from 14 to 23°C
- UV Index: 0 - Low
- Partly cloudy
Mon
9AM - 1PM
18 May 2026
- S 3 knots increasing to 7 knots.
- Increasing from 23 to 29°C
- UV Index: 8 - Very High
- Partly cloudy
Mon
1PM - 5PM
18 May 2026
- S 7 knots increasing to 11 knots. Gusts up to 17 knots.
- 27 to 31°C
- UV Index: 8 - Very High
- Sunny