- Low 3:42 AM 0.5 ft
- High 9:39 AM 6.5 ft
- Low 4:13 PM 0.3 ft
- High 10:03 PM 6.2 ft
First light 6:44 AMSunrise 7:12 AMSunset 5:59 PMLast light 6:28 PM
Mount Sinai Harbor, NY Tide Chart & Tide Times
NOAA tide station 8514421 · New York · updated Oct 23, 2026
Fri, Oct 23: High tide 9:39 AM (6.5 ft) and 10:03 PM (6.2 ft); low tide 3:42 AM (0.5 ft) and 4:13 PM (0.3 ft).
Tide todayHigh 9:39 AM · High 10:03 PMLow 3:42 AM · Low 4:13 PM
Today's range6.2 ft0.3 → 6.5 ft (MLLW)
Waves (buoy)Loading…NDBC 44025
Water temp (buoy)Loading…
WindLoading…
Sun7:12 AM – 5:59 PMFirst light 6:44 AM · Last light 6:28 PM
Buoy: NOAA NDBC 44025 (LONG ISLAND - 30 NM South of Islip, NY), 49 mi away. Buoy readings are recent observations, not a surf forecast. Wind: observed at NOAA CO-OPS station 8467150 (Bridgeport), 16 mi away; forecast from the NOAA National Weather Service (api.weather.gov).
Mount Sinai Harbor tides — next 3 days
Shaded = night · heights in feet above MLLW · local time
- Low 4:24 AM 0.3 ft
- High 10:20 AM 6.8 ft
- Low 4:58 PM -0.0 ft
- High 10:46 PM 6.4 ft
First light 6:45 AMSunrise 7:13 AMSunset 5:58 PMLast light 6:26 PM
- Low 5:06 AM 0.2 ft
- High 11:00 AM 7.1 ft
- Low 5:43 PM -0.3 ft
- High 11:30 PM 6.4 ft
First light 6:46 AMSunrise 7:15 AMSunset 5:56 PMLast light 6:25 PM
- Low 5:49 AM 0.1 ft
- High 11:42 AM 7.3 ft
- Low 6:28 PM -0.4 ft
First light 6:47 AMSunrise 7:16 AMSunset 5:55 PMLast light 6:24 PM
Mount Sinai Harbor tide table — next 9 days
| Fri, Oct 23 | Low 3:42 AM 0.53 ft | High 9:39 AM 6.48 ft | Low 4:13 PM 0.29 ft | High 10:03 PM 6.22 ft |
|---|---|---|---|---|
| Sat, Oct 24 | Low 4:24 AM 0.32 ft | High 10:20 AM 6.83 ft | Low 4:58 PM -0.03 ft | High 10:46 PM 6.37 ft |
| Sun, Oct 25 | Low 5:06 AM 0.17 ft | High 11:00 AM 7.12 ft | Low 5:43 PM -0.27 ft | High 11:30 PM 6.44 ft |
| Mon, Oct 26 | Low 5:49 AM 0.07 ft | High 11:42 AM 7.31 ft | Low 6:28 PM -0.40 ft | |
| Tue, Oct 27 | High 12:15 AM 6.44 ft | Low 6:33 AM 0.06 ft | High 12:27 PM 7.37 ft | Low 7:15 PM -0.41 ft |
| Wed, Oct 28 | High 1:02 AM 6.37 ft | Low 7:19 AM 0.12 ft | High 1:15 PM 7.30 ft | Low 8:05 PM -0.29 ft |
| Thu, Oct 29 | High 1:53 AM 6.23 ft | Low 8:10 AM 0.25 ft | High 2:07 PM 7.10 ft | Low 8:58 PM -0.08 ft |
| Fri, Oct 30 | High 2:47 AM 6.07 ft | Low 9:07 AM 0.44 ft | High 3:04 PM 6.83 ft | Low 9:57 PM 0.15 ft |
| Sat, Oct 31 | High 3:46 AM 5.91 ft | Low 10:09 AM 0.63 ft | High 4:06 PM 6.53 ft | Low 10:59 PM 0.35 ft |
Times are local (standard/daylight). Heights in feet above MLLW.
Nearby tide stations
- Cedar Beach, NY 0.2 mi
- Port Jefferson, NY 2.1 mi
- Port Jefferson Harbor Entrance, NY 2.8 mi
- Patchogue, NY 14.8 mi
- Sniffens Point, CT 15.9 mi
- Black Rock Harbor, CT 16.1 mi
- Bridgeport, CT 16.5 mi
- Gulf Beach, CT 16.7 mi
About this station
- NOAA station ID
- 8514421
- Type
- Subordinate station (offsets from NOAA station 8467150)
- Coordinates
- 40.9633, -73.0400
- Datum
- MLLW (feet)
- Time zone
- America/New_York
FAQ
When is high tide today at Mount Sinai Harbor, NY?
On Fri, Oct 23, predicted high tide at Mount Sinai Harbor, NY is at 9:39 AM, 10:03 PM local time.
When is low tide today at Mount Sinai Harbor, NY?
On Fri, Oct 23, predicted low tide at Mount Sinai Harbor, NY is at 3:42 AM, 4:13 PM local time.
Where does this tide data come from?
Predictions come from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS), station 8514421. Heights are in feet relative to Mean Lower Low Water (MLLW).