About Mt. Sinai Marina
Mount Sinai (Cedar Beach) Mooring Permit If you are interested in a Mount Sinai (Cedar Beach) Mooring Permit, you can purchase one online. Contact the Parks Department at 631-451-6133 for more information. Learn More How to Acquire a Marina Dock Slip For information on obtaining a seasonal slip for your boat, please contact the Town Clerk’s Office. Transient slips are available for residents and non-residents at all our marinas. Transient Docking Seasonal Boat Berth Transient Non-Resident (includes electric) Other Jet Ski (weekly) Jet Ski (seasonal) Dinghy Slip Dinghy/Kayak Rack Check fees on their website
Facilities
Electricity
Sewage
Toilets
Showers
FoodCOORDINATES
40.96366 N, -73.03131 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m, 20m+
Depth at MLW
3m+
Manoeuvrability
Good
Channel Marking
Excellent
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Floating
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
No
Weather Forecast
Mon
9AM - 1PM
20 July 2026
N 5–7 knots.
21 to 23°C
Calm sea
Sunny
Mon
1PM - 5PM
20 July 2026
- NW 7 knots decreasing to E 3 knots.
- 23 to 25°C
- Calm sea
UV Index: 7 - High- Sunny
Mon
5PM - 9PM
20 July 2026
- S 4 knots increasing to 12 knots. Gusts up to 19 knots.
- Decreasing from 25 to 22°C
- Calm sea
- UV Index: 0 - Low
- Sunny