Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

73°
H 74°
L 63°
SSW
11mph
Low tide
5:33 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Portsmouth, Melville, RI.
Next low tide : in 4h 22m at 5:33 pm (0.9 ft)
Next high tide (tomorrow) : 12:43 am (3.2 ft)
Sunset today : 6:53 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

Featured Local Businesses

East Passage 24. Photo by Tyler Fields Photography

East Passage Boatwrights
Oldport Marine

Oldport Marine
Newport International Boat Show

Newport International Boat Show

Becket & Company Yacht Management Newport

Portsmouth, Melville, RI Tides - Jan 1967

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:174.011:533.94:01-0.24:45-0.27:114:25Waning Gibbous1Sun
2Mon12:133.84:590.05:36-0.17:124:26Third Quarter2Mon
3Tue12:503.91:093.66:130.36:360.07:124:27Third Quarter3Tue
4Wed1:474.02:083.47:570.47:410.17:124:28Third Quarter4Wed
5Thu2:474.13:113.29:240.38:440.17:124:28Waning Crescent5Thu
6Fri3:524.14:173.210:270.29:400.07:124:29Waning Crescent6Fri
7Sat4:544.25:193.311:190.110:310.07:114:30Waning Crescent7Sat
8Sun5:514.36:133.512:070.07:114:31Waning Crescent8Sun
9Mon6:424.47:023.612:510.07:114:32New Moon9Mon
10Tue7:294.47:483.712:05-0.21:300.07:114:33New Moon10Tue
11Wed8:144.38:333.712:51-0.22:04-0.17:114:34New Moon11Wed
12Thu8:574.19:163.61:37-0.22:350.07:104:36Waxing Crescent12Thu
13Fri9:393.910:003.42:21-0.13:060.07:104:37Waxing Crescent13Fri
14Sat10:193.610:433.33:030.03:380.07:104:38Waxing Crescent14Sat
15Sun11:003.311:263.23:450.24:110.17:094:39Waxing Crescent15Sun
16Mon11:403.04:280.44:480.27:094:40Waxing Crescent16Mon
17Tue12:083.112:212.85:180.65:290.37:084:41First Quarter17Tue
18Wed12:493.01:032.66:200.76:170.47:084:42First Quarter18Wed
19Thu1:313.01:492.57:390.87:130.47:074:44First Quarter19Thu
20Fri2:173.02:432.48:560.78:120.47:074:45First Quarter20Fri
21Sat3:143.13:462.59:550.59:100.27:064:46Waxing Gibbous21Sat
22Sun4:173.34:482.710:440.310:040.07:054:47Waxing Gibbous22Sun
23Mon5:143.55:423.011:290.110:54-0.27:054:48Waxing Gibbous23Mon
24Tue6:053.96:313.412:13-0.27:044:50Full Moon24Tue
25Wed6:534.27:183.712:58-0.47:034:51Full Moon25Wed
26Thu7:394.48:063.912:34-0.71:41-0.67:024:52Full Moon26Thu
27Fri8:274.58:544.11:25-0.82:22-0.77:024:53Full Moon27Fri
28Sat9:154.59:444.22:15-0.83:00-0.77:014:55Waning Gibbous28Sat
29Sun10:054.310:364.33:05-0.73:38-0.77:004:56Waning Gibbous29Sun
30Mon10:574.111:314.23:55-0.54:17-0.56:594:57Waning Gibbous30Mon
31Tue11:523.84:49-0.25:02-0.36:584:58Third Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8452555)

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, Melville, RI Tides

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

Portsmouth, Melville, RI 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 Portsmouth, Melville, RI 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, Melville, RI?

Tide predictions for Portsmouth, Melville, RI 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, Melville, RI?

Tide data for Portsmouth, Melville, RI is sourced from NOAA Station #8452555. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8452555.

What is the moon phase in Portsmouth, Melville, RI tonight?

Tonight the moon over Portsmouth, Melville, RI is Waxing Crescent (30% illuminated). This places Portsmouth, Melville, RI 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