Nearby Harbors
43.6537’ N, 70.2487’ W

Portland, ME

47°
H 52°
L 36°
SSW
3mph
Low tide
11:04 am
Photo Credits

Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Sunday, October 18, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 16m at 11:04 am (2.3 ft)
Next high tide : 5:22 pm (8.5 ft)
Sunset today : 5:53 pm
Sunrise tomorrow : 6:59 am
Moon phase : First Quarter (50% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Featured Local Businesses

Sunset, calm water and the islands on the Maine Island Trail

Maine Island Trail Association (MITA)
Casco Bay Boat Transport

Casco Bay Boat Transport

USCG Station South Portland, ME
Hamilton Marine - Portland

Hamilton Marine - Portland
Yarmouth Boat Yard is an authorized Pursuit Boats dealer

Yarmouth Boat Yard
Freedom Boat Club at Yarmouth Boat Yard, Maine

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

Maine Yacht Center

Portland, ME Tides - Feb 1817

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:1510.310:549.03:570.64:40-0.77:014:56Full Moon1Sat
2Sun11:0010.711:379.44:430.25:23-1.07:004:57Full Moon2Sun
3Mon11:4510.95:29-0.26:06-1.36:594:58Full Moon3Mon
4Tue12:209.812:3110.96:17-0.56:50-1.36:585:00Waning Gibbous4Tue
5Wed1:0410.01:1910.77:06-0.77:35-1.26:575:01Waning Gibbous5Wed
6Thu1:5110.22:1110.37:58-0.78:24-0.96:565:02Waning Gibbous6Thu
7Fri2:4110.23:079.78:54-0.59:16-0.46:545:04Third Quarter7Fri
8Sat3:3610.14:099.29:54-0.310:130.16:535:05Third Quarter8Sat
9Sun4:349.95:158.710:58-0.111:140.66:525:06Third Quarter9Sun
10Mon5:379.76:258.412:070.16:505:08Waning Crescent10Mon
11Tue6:449.67:358.312:200.91:180.16:495:09Waning Crescent11Tue
12Wed7:509.78:388.51:291.02:23-0.16:485:11Waning Crescent12Wed
13Thu8:499.99:338.72:310.93:19-0.36:465:12Waning Crescent13Thu
14Fri9:4210.010:228.93:260.74:09-0.46:455:13New Moon14Fri
15Sat10:3010.111:069.04:150.54:54-0.56:435:15New Moon15Sat
16Sun11:1410.111:479.15:000.45:35-0.46:425:16New Moon16Sun
17Mon11:559.95:420.36:12-0.36:405:17New Moon17Mon
18Tue12:249.112:339.76:210.36:460.06:395:19Waxing Crescent18Tue
19Wed12:599.11:109.36:590.47:200.36:375:20Waxing Crescent19Wed
20Thu1:339.01:498.97:380.67:550.66:365:21Waxing Crescent20Thu
21Fri2:098.92:308.58:190.88:321.06:345:23Waxing Crescent21Fri
22Sat2:488.83:158.09:031.09:141.46:335:24First Quarter22Sat
23Sun3:308.64:057.79:511.210:001.76:315:25First Quarter23Sun
24Mon4:188.45:007.410:431.410:512.06:305:26First Quarter24Mon
25Tue5:128.46:017.311:421.411:482.06:285:28First Quarter25Tue
26Wed6:118.57:047.412:451.26:265:29Waxing Gibbous26Wed
27Thu7:128.88:027.812:501.91:460.86:255:30Waxing Gibbous27Thu
28Fri8:099.38:538.31:491.52:380.36:235:32Waxing Gibbous28Fri
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 neap phase. Tonight's moon is 50% 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 (50% 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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