Nearby Harbors
43.6537’ N, 70.2487’ W

Portland, ME

65°
H -°
L 46°
NNW
8mph
Low tide
11:38 pm
Photo Credits

Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Friday, September 18, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 4h 03m at 11:38 pm (1.5 ft)
Next high tide (tomorrow) : 5:56 am (7.6 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:23 am
Moon phase : First Quarter (48% 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
Casco Bay Boat Transport

Casco Bay Boat Transport
Freedom Boat Club at Yarmouth Boat Yard, Maine

Freedom Boat Club of Maine
Maine Yacht Center docks, Portland, Maine

Maine Yacht Center

USCG Station South Portland, ME
Sunset, calm water and the islands on the Maine Island Trail

Maine Island Trail Association (MITA)

Portland, ME Tides - Sep 2176

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Common Questions About Portland, ME Tides

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

Portland, ME is currently in a neap phase. Tonight's moon is 48% 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 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 First Quarter (48% illuminated). This places Portland, ME 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

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