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


Installations
COORDINATES
40.96366 N, -73.03131 E
Port Information
Téléphone
Berth Sizes
< 10m, 10-20m, 20m+
Profondeur à la marée basse moyenne
3m+
Manœuvrabilité
Good
Channel Marking
Excellent
Port d'entrée
No
Overseas Visitor Berths
Yes
Type de quai
Floating
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
No
Weather Forecast
Sun
5AM - 9AM
17 May 2026
- W 8 knots decreasing to 4 knots. Gusts up to 17 knots.
- 13 to 17°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Sun
9AM - 1PM
17 May 2026
- W 4–7 knots.
- Increasing from 16 to 20°C
- Calm sea
- UV Index: 8 - Very High
- Cloudy
Sun
1PM - 5PM
17 May 2026
- W 7 knots increasing to SW 11 knots. Gusts up to 17 knots.
- 17 to 23°C
- Calm sea
- UV Index: 8 - Very High
- Mostly fine