Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

54°
H -°
L 45°
ENE
5mph
High tide
9:51 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 4:08 am (0.7 ft)
Next high tide : in 3h 31m at 9:51 pm (8.3 ft)
Sunset today : 6:38 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Featured Local Businesses

An aerial view of Safe Harbor Kittery Point

Safe Harbor Kittery Point
Marine Supplies

Hamilton Marine - Kittery, ME
Maritime Boats by Chislett Marine

Maritime Boats
Great Bay Marine

Great Bay Marine

Seavey Island, NH Tides - Aug 1866

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:049.12:349.08:14-0.38:400.14:377:08Waning Gibbous1Wed
2Thu2:548.93:249.19:03-0.29:360.14:387:07Third Quarter2Thu
3Fri3:498.64:179.29:550.010:350.14:397:06Third Quarter3Fri
4Sat4:488.45:159.210:520.211:370.14:407:05Third Quarter4Sat
5Sun5:528.26:179.311:520.34:417:03Waning Crescent5Sun
6Mon6:598.17:219.412:420.012:550.34:427:02Waning Crescent6Mon
7Tue8:048.28:239.61:47-0.21:590.34:437:01Waning Crescent7Tue
8Wed9:058.49:229.82:48-0.42:590.14:446:59Waning Crescent8Wed
9Thu10:018.710:169.93:43-0.73:54-0.14:456:58New Moon9Thu
10Fri10:538.911:079.94:35-0.84:47-0.24:466:57New Moon10Fri
11Sat11:429.011:569.75:24-0.85:37-0.24:476:55New Moon11Sat
12Sun12:289.06:09-0.76:25-0.14:486:54Waxing Crescent12Sun
13Mon12:429.41:128.96:53-0.47:110.14:506:52Waxing Crescent13Mon
14Tue1:289.11:558.87:36-0.17:580.34:516:51Waxing Crescent14Tue
15Wed2:138.62:388.68:190.38:460.64:526:49Waxing Crescent15Wed
16Thu3:008.23:238.49:030.79:360.94:536:48First Quarter16Thu
17Fri3:487.84:108.29:501.110:281.14:546:46First Quarter17Fri
18Sat4:407.45:008.010:391.411:221.34:556:45First Quarter18Sat
19Sun5:357.25:538.011:301.64:566:43First Quarter19Sun
20Mon6:327.16:488.012:181.312:251.74:576:42Waxing Gibbous20Mon
21Tue7:297.17:428.21:151.21:201.64:586:40Waxing Gibbous21Tue
22Wed8:227.38:338.42:071.02:121.44:596:39Waxing Gibbous22Wed
23Thu9:097.69:198.72:550.73:001.15:016:37Waxing Gibbous23Thu
24Fri9:537.910:029.03:380.43:440.75:026:35Full Moon24Fri
25Sat10:348.310:459.24:180.04:280.45:036:34Full Moon25Sat
26Sun11:148.711:289.44:58-0.35:110.05:046:32Full Moon26Sun
27Mon11:559.05:39-0.55:55-0.35:056:30Full Moon27Mon
28Tue12:129.512:379.36:20-0.66:41-0.55:066:29Waning Gibbous28Tue
29Wed12:579.41:219.47:04-0.67:30-0.55:076:27Waning Gibbous29Wed
30Thu1:469.22:099.57:50-0.58:22-0.55:086:25Waning Gibbous30Thu
31Fri2:388.93:019.58:41-0.29:18-0.35:096:24Third Quarter31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

www.USHarbors.com

© 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 Seavey Island, NH Tides

Collapse All
Is this week a spring tide or neap tide in Seavey Island, NH?

Seavey Island, NH is currently in a spring phase. Tonight's moon is 90% 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 Seavey Island, NH 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 Seavey Island, NH?

Tide predictions for Seavey Island, NH 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 Seavey Island, NH?

Tide data for Seavey Island, NH is sourced from NOAA Station #8419870. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8419870.

What is the moon phase in Seavey Island, NH tonight?

Tonight the moon over Seavey Island, NH is Waxing Gibbous (90% illuminated). This places Seavey Island, NH 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

Sablefish farmed in net pens at NOAA's Northwest Fisheries Science Center. Credit: Megan Ewald for NOAA Fisheries.

Managing Genetic Risk in Offshore Aquaculture

By fisheries.noaa.gov, fisheries.noaa.gov. Aquaculture can sustainably produce seafood to complement wild-caught fisheries. However, like all… More

FishingFoodScience

Deep-sea sponges and other invertebrates in a collection basket during a bottom trawl survey. Credit: NOAA Fisheries

Nine Species of Deep-Sea Sponges Discovered in Alaska

By fisheries.noaa.gov, fisheries.noaa.gov. Scientists have discovered nine new species of sponges in the Gulf of… More

Ocean Science

Sugar Creek flows over a dam initially created with beaver dam analogues to help improve habitat for coho salmon and other wildlife. Photo courtesy of Scott River Watershed Council.

Start-Up Beaver Dams Transform Parched California Creeks into Salmon Havens, New Research Finds

By fisheries.noaa.gov, fisheries.noaa.gov. Battered by early gold mining and diminished by logging and diversions,the lower… More

Coastal News

Image Credits: Flickr.com.

Concrete Ships Hiding in Plain Sight: The Forgotten Breakwaters of America's Harbors

By Jordan Hanssen, best4boats. There's a good chance a concrete ship is lurking in your… More

Maritime History

Image Credits: Flickr.com.

Is Offshore Construction Noise Stressing New England's Lobsters? WHOI Scientists Want to Know

By Kiran Johnson, whoi.edu. As offshore wind farms multiply along the New England coast, a… More

Coastal LifeOcean AwarenessOcean Science

The future of fisheries-independent surveys will include traditional capture-based surveys as well as advanced technology such as acoustic, optical, and molecular tools deployed from survey vessels, uncrewed vehicles, and moored to the seafloor. Credit: NOAA Fisheries/Su Kim

Charting the Future of Fisheries-Independent Surveys

By fisheries.noaa.gov, fisheries.noaa.gov. Fisheries-independent surveys operate on dedicated survey vessels and are the foundation of… More

Ocean Science

Coastally-trapped Kelvin waves, a signature of El Niño, traveled north along the West Coast during the 1997/1998 El Niño, as shown in a map of sea surface height anomalies. Darker reds show sea levels higher than normal, while darker blues show heights below normal. Scientists are now watching for similar waves to move up the West Coast this fall. Credit: Dillon Amaya/North Carolina State University

Ocean Indicators We’re Tracking for El Niño’s Arrival on the West Coast

By fisheries.noaa.gov, fisheries.noaa.gov. Has El Niño reached the West Coast? You might think it has.… More

Coastal NewsExtreme WeatherOcean ScienceWeather & Tides

Docked fishing boats at Yaquina Bay, Newport, Oregon. Credit: iStock

Advancing Agency-Level Reforms to Restore American Seafood Competitiveness

By fisheries.noaa.gov, fisheries.noaa.gov. Over the past year, I have met with fishermen, processors, coastal community… More

Coastal NewsFishingFood

Image Credits: Wikimedia commons.

Coral IVF: How Scientists Are Breeding Heat-Resistant Reefs for Florida's Future

By Dawn Anderson, best4boats.com. The reefs that protect South Florida's coastlines, harbors, and marinas are… More

Ocean Science

Your Privacy Choices