Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

61°
H -°
L 47°
WSW
6mph
Low tide
11:40 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Monday, November 2, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 5h 12m at 11:40 pm (0.2 ft)
Next high tide (tomorrow) : 6:08 am (7.7 ft)
Sunset today : 4:33 pm
Sunrise tomorrow : 6:19 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

Featured Local Businesses

Maritime Boats by Chislett Marine

Maritime Boats
An aerial view of Safe Harbor Kittery Point

Safe Harbor Kittery Point
Marine Supplies

Hamilton Marine - Kittery, ME
Great Bay Marine

Great Bay Marine

Navtronics

Portsmouth, NH Tides - Sep 1824

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:337.35:518.111:241.15:116:22First Quarter1Wed
2Thu6:377.16:548.012:180.712:291.35:126:20Waxing Gibbous2Thu
3Fri7:407.17:558.01:230.71:321.45:136:18Waxing Gibbous3Fri
4Sat8:357.28:488.12:200.72:281.25:146:17Waxing Gibbous4Sat
5Sun9:227.49:348.23:090.63:161.05:156:15Waxing Gibbous5Sun
6Mon10:047.610:168.23:510.53:590.85:166:13Full Moon6Mon
7Tue10:427.810:548.34:280.44:380.75:176:11Full Moon7Tue
8Wed11:178.011:318.25:010.45:140.55:186:09Full Moon8Wed
9Thu11:508.15:330.45:490.45:196:08Full Moon9Thu
10Fri12:068.112:218.26:040.56:230.45:216:06Waning Gibbous10Fri
11Sat12:408.012:538.26:350.66:580.45:226:04Waning Gibbous11Sat
12Sun1:157.81:258.27:090.77:360.45:236:02Waning Gibbous12Sun
13Mon1:527.62:028.27:460.98:180.55:246:01Waning Gibbous13Mon
14Tue2:347.32:468.18:281.09:060.65:255:59Third Quarter14Tue
15Wed3:227.13:368.19:161.110:000.75:265:57Third Quarter15Wed
16Thu4:187.04:348.110:111.210:590.75:275:55Third Quarter16Thu
17Fri5:197.05:378.211:111.25:285:53Third Quarter17Fri
18Sat6:247.26:438.512:030.512:171.05:295:52Waning Crescent18Sat
19Sun7:297.67:498.81:080.21:230.65:305:50Waning Crescent19Sun
20Mon8:298.28:499.22:08-0.22:260.05:325:48Waning Crescent20Mon
21Tue9:228.89:459.53:03-0.63:24-0.65:335:46New Moon21Tue
22Wed10:139.310:399.63:54-0.94:18-1.05:345:44New Moon22Wed
23Thu11:039.711:329.64:44-1.05:11-1.35:355:42New Moon23Thu
24Fri11:529.85:32-1.06:03-1.45:365:41Waxing Crescent24Fri
25Sat12:249.312:409.86:21-0.76:54-1.25:375:39Waxing Crescent25Sat
26Sun1:159.01:309.57:10-0.37:46-0.85:385:37Waxing Crescent26Sun
27Mon2:088.52:219.18:010.18:42-0.45:395:35Waxing Crescent27Mon
28Tue3:047.93:188.68:550.79:410.15:415:34First Quarter28Tue
29Wed4:047.54:188.29:541.110:420.65:425:32First Quarter29Wed
30Thu5:067.25:207.910:561.411:450.95:435:30First Quarter30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

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 Portsmouth, NH Tides

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

Portsmouth, NH is currently in a neap phase. Tonight's moon is 41% 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 minimum.

What datum are Portsmouth, 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 Portsmouth, NH?

Tide predictions for Portsmouth, 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 Portsmouth, NH?

Tide data for Portsmouth, NH is sourced from NOAA Station #8423745. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8423745.

What is the moon phase in Portsmouth, NH tonight?

Tonight the moon over Portsmouth, NH is Third Quarter (41% illuminated). This places Portsmouth, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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

Ouzel: A Modern Classic Built with Purposeful Elegance

Rockport Marine’s 95-foot Ouzel: a modern classic sailing Superyacht built for world cruising By US… More

BoatingCoastal News

Raw oysters on ice

A Guide to Ordering, Shucking, and Eating Oysters

By fisheries.noaa.gov, fisheries.noaa.gov. October was National Seafood Month, and on the Maine coast it was… More

Coastal LifeCoastal NewsMarine Economy

A signboard thanking patrons at Tuna Harbor Dockside Market in San Diego. Credit: Tuna Harbor Dockside Market.

America First Seafood Strategy: Strengthening U.S. Fisheries, Coastal Economies, and Food Security

By fisheries.noaa.gov, fisheries.noaa.gov. The United States manages some of the world’s most productive and sustainable… More

Coastal NewsMarine Economy

North Atlantic right whale and her 2026 calf swimming off the Florida coast

Right Whale Speed Zones Take Effect Nov 1 2026

By US Harbors Starting November 1, most vessels 65 feet and longer must slow to… More

BoatingCoastal NewsOcean Science

Image Credits: Pixino.

Stray Current vs. Galvanic Corrosion: What Every Boat Owner Needs to Know

By Captain Ken Kreisler, Best4Boats.com. If you keep a boat in a marina — or… More

Boating

Restored oyster reefs are monitored to ensure the oysters that grow there are thriving. Photo: Oyster Recovery Partnership.

Celebrating Oysters During Oyster Week

By fisheries.noaa.gov, fisheries.noaa.gov. Oysters are great multitaskers! They provide many benefits to the ecosystem they… More

Marine EconomyOcean Science

A snow-Tanner hybrid crab collected during the 2026 eastern Bering Sea bottom trawl survey. Hybrid crab exhibit intermediate morphological traits—such as a curved mouth—relative to snow and Tanner crab parent species. Credit: NOAA Fisheries / Leah Zacher

Marine Heatwave Triggered a Hybrid Crab Surge in the Bering Sea

By fisheries.noaa.gov, fisheries.noaa.gov. A team of scientists at the Alaska Fisheries Science Center’s Kodiak Laboratory… More

Ocean Science

A car drives through a snowstorm in Broomfield, Colorado, in 2024. (Image credit: Bob Hyatt/NOAA)

El Nino looms large over U.S. Winter Outlook

By noaa.gov, noaa.gov. NOAA’s U.S. Winter Outlook, released today, shows how El Nino will likely influence the… More

Coastal NewsWeather & Tides

Archival photo of New England swordfishing vessel (left) courtesy of NOAA Fisheries; Background photo and photo offloading fish (right) courtesy of Hawaii Longline Association/Eric Kingma

Highly Migratory Species Management: Managing Shared Resources at Home and Around the World

By fisheries.noaa.gov, fisheries.noaa.gov. Highly migratory species—like Atlantic yellowfin tuna, Pacific albacore, and Atlantic swordfish—travel thousands of miles across… More

Coastal NewsOcean Science

Your Privacy Choices