Nearby Harbors
40.9500’ N, 73.0767’ W

Port Jefferson, NY

59°
H 73°
L 51°
SW
11mph
High tide
10:12 am
Photo Credits

Tides Today & Tomorrow in Port Jefferson, NY

TIDE TIMES for Thursday, October 8, 2026
The tide is currently rising in Port Jefferson, NY.
Next low tide : 4:31 pm (0.1 ft)
Next high tide : in 3h 46m at 10:12 am (7.4 ft)
Sunset today : 6:23 pm
Sunrise tomorrow : 6:56 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #8514560
Common Questions About Tides

Port Jefferson, NY Tides - May 1837

Print this Tide Chart

We're sorry. There is no tidal information for this month. Please check back later.

© 2026 US Harbors LLC All rights reserved

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Common Questions About Port Jefferson, NY Tides

Collapse All
Is this week a spring tide or neap tide in Port Jefferson, NY?

Port Jefferson, NY is currently in a spring phase. Tonight's moon is 4% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Port Jefferson, NY tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Port Jefferson, NY?

Tide predictions for Port Jefferson, NY come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Port Jefferson, NY?

Tide data for Port Jefferson, NY is sourced from NOAA Station #8514560. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8514560.

What is the moon phase in Port Jefferson, NY tonight?

Tonight the moon over Port Jefferson, NY is Waning Crescent (4% illuminated). This places Port Jefferson, NY in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

Coastal Stories See All

NOAA's flood inundation map (left) depicting the forecast for flooding extent in New London, Wisconsin, and a photo of flooded streets in New London (right), dated April 17, 2026. (Image credit: NOAA NWS)

NOAA’s flood mapping tool now covers nearly 100% of U.S.

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA’s National Weather Service announced today that Flood Inundation Mapping (FIM), a… More

Coastal NewsExtreme WeatherWeather & Tides

Image Credits: Noaa fisheries.

Meet Hawaii Fish Company, Tilapia Farmers in Hawaiʻi

By fisheries.noaa.gov, fisheries.noaa.gov. For husband and wife duo Ron and and Estralita Weidenbach, fish farming… More

Coastal LifeMarine Economy

NOAA Fisheries and Sea Quester Farms partnered up to evaluate if kelp farms provide habitat for marine life in Alaska. Pictured here is one of Sea Quester’s farms in southeast Alaska near Juneau. Credit: Hatch Blue, Alaska Mariculture Cluster

Kelp Farms and Marine Life Co-Exist in Southeast Alaska

By fisheries.noaa.gov, fisheries.noaa.gov. Marine aquaculture, or mariculture, provides economic opportunities for coastal communities in Alaska… More

Coastal LifeEnvironmentFoodOcean Science

Image Credits: Noaa Fisheries.

Celebrate National Seafood Month

By fisheries.noaa.gov, fisheries.noaa.gov. As we welcome autumn, we also celebrate National Seafood Month! Join us… More

Coastal LifeCoastal NewsCultureFood

A group of women aboard a boat hold large red snappers caught during a recreational fishing trip. Credit: Grayson Shepard

NOAA Announces 2026 Federal Recreational Red Snapper Season, Exempted Fishing Permits in South Atlantic

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA Fisheries announced today the 2026 federal recreational red snapper fishing season… More

Coastal NewsFishingTravel

boats docks in a harbor from above

Newport Boat Show 2026: Award Winners, New Boats and a Castle Hill Sunset

By US Harbors The weather was perfect as the US Harbors crew arrived in Newport… More

BoatingCoastal LifeCoastal NewsMarine Economy

Hurricane tracks on a map, compared to another map with no tracks

A Hurricane Season Without Hurricanes, So Far

By US Harbors Every Atlantic hurricane season from 1915 through 2025 produced at least one… More

Extreme WeatherHurricanesWeather & Tides

Olive ridley sea turtle near Seal Beach in Orange County, CA. Credit: Huntington Beach Fire Department

First-Ever Olive Ridley Sea Turtle Nested in California

By fisheries.noaa.gov, fisheries.noaa.gov. An olive ridley sea turtle was observed digging a nest and laying eggs on the beach… More

Coastal News

Large waves crash over a jetty as a large coastal storm bears down on the region on March 2, 2018 in Scituate, Massachusetts. A powerful nor'easter is bringing snow, rain and high wind to much of the U.S. Northeast. (Image credit: Scott Eisen/Getty Images)

Weekend nor’easter likely to bring damaging winds, coastal flooding

By noaa.gov, noaa.gov. Forecasters at NOAA’s National Weather Service (NWS) are monitoring a powerful nor’easter… More

Coastal NewsExtreme WeatherWeather & Tides

Your Privacy Choices