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
Tue
5AM - 9AM
21 July 2026
S 7 knots increasing to 12 knots. Gusts up to 20 knots.
20 to 23°C
Calm sea
UV Index: 0 - Low
Cloudy
Tue
9AM - 1PM
21 July 2026
- S 10–15 knots. Gusts up to 21 knots.
- 24°C
- S 0.5m at 3s period
- UV Index: 3 - Moderate
- Cloudy
Tue
1PM - 5PM
21 July 2026
- S 10–15 knots. Gusts up to 20 knots.
- 23 to 25°C
- S 0.5m at 3s period
- UV Index: 6 - High
- Chance of showers