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
Wed
9AM - 1PM
13 May 2026
- S 13 knots increasing to 15 knots. Gusts up to 25 knots.
- 15°C
- S 0.7m at 3s period
- Cloudy
Wed
1PM - 5PM
13 May 2026
- S 14–21 knots. Gusts up to 33 knots.
- 15 to 17°C
- S 0.7-1.0m at 3s period
- UV Index: 6 - High
- Cloudy
Wed
5PM - 9PM
13 May 2026
- S 20 knots decreasing to 17 knots. Gusts up to 33 knots.
- 13 to 16°C
- S 0.9m at 3s period
- UV Index: 0 - Low
- Cloudy