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
22 April 2026
- S 13 knots increasing to 15 knots. Gusts up to 23 knots.
- 6 to 8°C
- S 0.4m at 2s period
- Cloudy
Wed
1PM - 5PM
22 April 2026
- SE 15 knots decreasing to 7 knots. Gusts up to 22 knots.
- 6 to 9°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Wed
5PM - 9PM
22 April 2026
- SE 4–8 knots.
- 8°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy