Nearby Harbors
43.6537’ N, 70.2487’ W

Portland, ME

49°
H -°
L 38°
NNE
9mph
Low tide
1:40 am
Photo Credits

Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 39m at 1:40 am (1.4 ft)
Next high tide : 8:00 am (8.2 ft)
Sunset today : 5:48 pm
Sunrise tomorrow : 7:02 am
Moon phase : Waxing Gibbous (78% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Featured Local Businesses

Maine Yacht Center docks, Portland, Maine

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

Maine Island Trail Association (MITA)
Freedom Boat Club at Yarmouth Boat Yard, Maine

Freedom Boat Club of Maine
Yarmouth Boat Yard is an authorized Pursuit Boats dealer

Yarmouth Boat Yard
Hamilton Marine - Portland

Hamilton Marine - Portland

USCG Station South Portland, ME
Casco Bay Boat Transport

Casco Bay Boat Transport

Portland, ME Tides - Sep 1814

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:579.45:430.05:550.45:076:21Full Moon1Thu
2Fri12:0810.012:329.66:18-0.16:340.25:086:20Waning Gibbous2Fri
3Sat12:469.91:089.86:55-0.17:160.15:106:18Waning Gibbous3Sat
4Sun1:279.81:489.97:350.08:020.15:116:16Waning Gibbous4Sun
5Mon2:139.52:3410.08:200.28:530.15:126:14Third Quarter5Mon
6Tue3:049.33:2510.09:100.49:490.15:136:13Third Quarter6Tue
7Wed4:029.04:2310.010:050.610:490.25:146:11Third Quarter7Wed
8Thu5:058.85:2610.011:050.811:550.15:156:09Third Quarter8Thu
9Fri6:138.86:3310.212:100.85:166:07Waning Crescent9Fri
10Sat7:219.07:3910.51:03-0.11:180.55:176:05Waning Crescent10Sat
11Sun8:239.48:4110.82:07-0.42:210.25:196:04Waning Crescent11Sun
12Mon9:199.89:3711.03:05-0.83:19-0.25:206:02New Moon12Mon
13Tue10:1210.210:3011.13:57-1.04:13-0.65:216:00New Moon13Tue
14Wed11:0110.511:2111.04:47-1.15:05-0.75:225:58New Moon14Wed
15Thu11:4810.55:34-1.05:54-0.75:235:56Waxing Crescent15Thu
16Fri12:1010.712:3310.56:19-0.76:42-0.55:245:54Waxing Crescent16Fri
17Sat12:5710.31:1710.27:03-0.27:30-0.25:255:53Waxing Crescent17Sat
18Sun1:459.72:029.97:480.38:190.25:265:51Waxing Crescent18Sun
19Mon2:349.12:509.58:340.99:110.65:285:49First Quarter19Mon
20Tue3:288.63:419.19:241.410:061.05:295:47First Quarter20Tue
21Wed4:238.24:368.810:171.811:031.35:305:45First Quarter21Wed
22Thu5:218.05:338.711:142.05:315:43First Quarter22Thu
23Fri6:207.96:328.712:031.412:142.15:325:42Waxing Gibbous23Fri
24Sat7:178.07:288.91:031.31:131.95:335:40Waxing Gibbous24Sat
25Sun8:088.38:189.21:551.12:041.65:345:38Waxing Gibbous25Sun
26Mon8:528.69:029.52:400.82:491.25:365:36Waxing Gibbous26Mon
27Tue9:329.09:439.73:190.53:300.85:375:34Full Moon27Tue
28Wed10:099.410:239.93:560.24:090.45:385:32Full Moon28Wed
29Thu10:459.811:0210.14:310.04:480.05:395:31Full Moon29Thu
30Fri11:2110.111:4110.15:08-0.15:28-0.35:405:29Full Moon30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8418150)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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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 78% 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 Gibbous (78% 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

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