Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

53°
H -°
L 50°
SSW
1mph
High tide
5:33 am
Photo Credits

Tides Today & Tomorrow in Squamscott River, Great Bay, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 11:50 am (0.9 ft)
Next high tide : in 3h 10m at 5:33 am (6.6 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Featured Local Businesses

Great Bay Marine

Great Bay Marine
Maritime Boats by Chislett Marine

Maritime Boats
Marine Supplies

Hamilton Marine - Kittery, ME
An aerial view of Safe Harbor Kittery Point

Safe Harbor Kittery Point
Yarmouth Boat Yard is an authorized Pursuit Boats dealer

Yarmouth Boat Yard

Squamscott River, Great Bay, NH Tides - Aug 1943

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:097.42:446.68:550.18:560.85:338:06New Moon1Sun
2Mon2:477.43:216.79:300.19:320.85:348:05New Moon2Mon
3Tue3:237.43:566.710:030.110:080.85:358:03Waxing Crescent3Tue
4Wed3:597.34:306.810:360.210:450.85:368:02Waxing Crescent4Wed
5Thu4:347.15:046.811:100.211:240.85:378:01Waxing Crescent5Thu
6Fri5:127.05:426.811:470.35:388:00Waxing Crescent6Fri
7Sat5:546.86:226.912:070.712:280.45:397:58First Quarter7Sat
8Sun6:406.77:077.012:540.71:120.55:407:57First Quarter8Sun
9Mon7:326.57:577.21:440.72:010.65:427:56First Quarter9Mon
10Tue8:276.58:517.32:390.62:540.65:437:54First Quarter10Tue
11Wed9:296.59:517.63:390.43:520.65:447:53Waxing Gibbous11Wed
12Thu10:336.610:527.94:410.14:540.45:457:52Waxing Gibbous12Thu
13Fri11:356.911:518.35:43-0.35:540.15:467:50Waxing Gibbous13Fri
14Sat12:337.36:41-0.76:52-0.25:477:49Full Moon14Sat
15Sun12:498.61:297.67:36-1.07:49-0.55:487:47Full Moon15Sun
16Mon1:458.82:237.98:29-1.28:44-0.75:497:46Full Moon16Mon
17Tue2:408.83:168.19:22-1.39:39-0.85:507:44Waning Gibbous17Tue
18Wed3:348.74:078.110:12-1.210:33-0.75:517:43Waning Gibbous18Wed
19Thu4:278.44:598.111:03-0.911:29-0.65:527:41Waning Gibbous19Thu
20Fri5:228.05:537.911:55-0.65:547:40Waning Gibbous20Fri
21Sat6:197.56:487.612:26-0.312:49-0.15:557:38Third Quarter21Sat
22Sun7:197.17:457.41:260.01:450.35:567:36Third Quarter22Sun
23Mon8:206.78:437.22:270.32:430.75:577:35Third Quarter23Mon
24Tue9:226.49:427.03:300.53:441.05:587:33Waning Crescent24Tue
25Wed10:236.310:407.04:340.64:441.15:597:32Waning Crescent25Wed
26Thu11:206.311:337.15:320.65:401.16:007:30Waning Crescent26Thu
27Fri12:106.46:230.56:291.06:017:28Waning Crescent27Fri
28Sat12:217.212:556.57:080.47:130.86:027:27Waning Crescent28Sat
29Sun1:047.31:366.77:480.37:530.76:037:25New Moon29Sun
30Mon1:447.32:136.88:240.28:300.66:057:23New Moon30Mon
31Tue2:227.42:496.98:580.19:060.56:067:22New Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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 Squamscott River, Great Bay, NH Tides

Collapse All
Is this week a spring tide or neap tide in Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

What datum are Squamscott River, Great Bay, 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 Squamscott River, Great Bay, NH?

Tide predictions for Squamscott River, Great Bay, 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 Squamscott River, Great Bay, NH?

Tide data for Squamscott River, Great Bay, NH is sourced from NOAA Station #8422687. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8422687.

What is the moon phase in Squamscott River, Great Bay, NH tonight?

Tonight the moon over Squamscott River, Great Bay, NH is Waxing Crescent (30% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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

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

The Sacramento River near the main spawning area of winter-run Chinook salmon blocked by dams from their original mountain spawning habitat. The Sundial Bridge in Redding rises in the background. Credit: Larisa Thacher/UC Davis Center for Watershed Sciences

A Secret to Survival for California’s Most Endangered Salmon

By fisheries.noaa.gov, fisheries.noaa.gov. Traditional field research combined with new technology has revealed a secret to… More

Coastal NewsEnvironment

A group of melon-headed whales swimming together on February 1, 2026, seen during the Winter Hawaiian Islands Cetacean and Ecosystem Assessment Survey. Credit: NOAA Fisheries/Mary Applegate, taken under NOAA permit

A Winter at Sea Reveals Seasonal Habits of Whales, Dolphins, and Seabirds in Hawaiʻi

By fisheries.noaa.gov, fisheries.noaa.gov. The Hawaiian archipelago is teeming with marine life, and winter brings some… More

Ocean Science

NOAA Autonomous Surface Vehicle in Narragansett Bay during testing. Goat Island and the Newport Bridge in the background.

Beyond Ocean Mapping: Using Uncrewed Vehicles to Advance Ocean Research

By fisheries.noaa.gov, fisheries.noaa.gov. It’s January off of Nantucket Shoals. An uncrewed surface vehicle begins a… More

Ocean Science

Your Privacy Choices