Nearby Harbors
43.6537’ N, 70.2487’ W

Portland, ME

67°
H -°
L 60°
S
10mph
Low tide
9:49 pm
Photo Credits

Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 5h 33m at 9:49 pm (0.7 ft)
Next high tide (tomorrow) : 4:04 am (8.3 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Featured Local Businesses

Yarmouth Boat Yard is an authorized Pursuit Boats dealer

Yarmouth Boat Yard
Hamilton Marine - Portland

Hamilton Marine - Portland

USCG Station South Portland, ME
Freedom Boat Club at Yarmouth Boat Yard, Maine

Freedom Boat Club of Maine
Casco Bay Boat Transport

Casco Bay Boat Transport
Sunset, calm water and the islands on the Maine Island Trail

Maine Island Trail Association (MITA)
Maine Yacht Center docks, Portland, Maine

Maine Yacht Center

Portland, ME Tides - May 1871

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:399.38:119.51:251.01:530.34:376:46Waxing Gibbous1Mon
2Tue8:329.88:5710.22:190.32:41-0.14:356:47Waxing Gibbous2Tue
3Wed9:2310.19:4310.93:10-0.53:28-0.54:346:48Full Moon3Wed
4Thu10:1310.410:2911.43:59-1.14:15-0.74:336:50Full Moon4Thu
5Fri11:0410.611:1711.74:49-1.65:04-0.84:316:51Full Moon5Fri
6Sat11:5610.55:40-1.95:53-0.74:306:52Waning Gibbous6Sat
7Sun12:0711.712:4910.36:32-1.86:45-0.44:296:53Waning Gibbous7Sun
8Mon12:5811.51:4410.07:25-1.67:390.04:276:54Waning Gibbous8Mon
9Tue1:5411.12:459.68:23-1.18:380.44:266:55Waning Gibbous9Tue
10Wed2:5510.63:499.39:25-0.69:430.84:256:56Third Quarter10Wed
11Thu4:0010.14:549.110:29-0.210:511.14:246:58Third Quarter11Thu
12Fri5:089.65:589.111:340.24:236:59Third Quarter12Fri
13Sat6:159.47:009.212:011.212:380.44:217:00Waning Crescent13Sat
14Sun7:209.27:559.41:081.01:370.54:207:01Waning Crescent14Sun
15Mon8:179.28:449.62:080.72:280.64:197:02Waning Crescent15Mon
16Tue9:089.29:279.82:590.53:130.64:187:03Waning Crescent16Tue
17Wed9:549.110:069.93:450.23:540.84:177:04New Moon17Wed
18Thu10:379.110:439.94:270.14:310.94:167:05New Moon18Thu
19Fri11:179.011:199.95:050.05:071.14:157:06New Moon19Fri
20Sat11:558.811:539.85:420.15:421.24:147:07New Moon20Sat
21Sun12:328.76:170.16:171.44:137:08Waxing Crescent21Sun
22Mon12:289.71:108.56:530.36:541.64:127:09Waxing Crescent22Mon
23Tue1:049.51:498.47:300.47:341.74:127:10Waxing Crescent23Tue
24Wed1:439.32:318.28:110.68:171.84:117:11Waxing Crescent24Wed
25Thu2:279.23:168.28:550.79:051.94:107:12First Quarter25Thu
26Fri3:159.14:058.39:420.89:571.84:097:13First Quarter26Fri
27Sat4:079.04:548.510:320.710:521.64:097:14First Quarter27Sat
28Sun5:039.05:468.911:230.711:501.34:087:15First Quarter28Sun
29Mon6:019.16:399.412:170.54:077:16Waxing Gibbous29Mon
30Tue7:019.37:3110.112:500.71:110.24:077:17Waxing Gibbous30Tue
31Wed7:599.68:2210.71:480.12:040.04:067:18Waxing Gibbous31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8418150)

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 Portland, ME Tides

Collapse All
Is this week a spring tide or neap tide in Portland, ME?

Portland, ME 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 Portland, ME 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 Portland, ME?

Tide predictions for Portland, ME 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 Portland, ME?

Tide data for Portland, ME is sourced from NOAA Station #8418150. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8418150.

What is the moon phase in Portland, ME tonight?

Tonight the moon over Portland, ME is Waxing Crescent (30% illuminated). This places Portland, ME 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