Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Saturday, July 18, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 1h 31m at 9:09 pm (0.2 ft)
Next high tide (tomorrow) : 3:22 am (10.2 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:16 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Feb 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:369.87:218.612:100.61:05-0.16:564:52Waxing Gibbous1Fri
2Sat7:419.98:248.81:190.62:10-0.26:554:54Waxing Gibbous2Sat
3Sun8:4010.19:199.02:210.53:07-0.46:544:55Waxing Gibbous3Sun
4Mon9:3310.210:099.23:160.33:57-0.66:524:56Full Moon4Mon
5Tue10:2110.310:549.44:060.14:42-0.76:514:58Full Moon5Tue
6Wed11:0510.211:359.54:510.05:23-0.66:504:59Full Moon6Wed
7Thu11:4610.15:340.06:01-0.56:495:00Full Moon7Thu
8Fri12:139.512:259.86:130.16:36-0.26:475:02Waning Gibbous8Fri
9Sat12:499.41:039.56:510.27:110.16:465:03Waning Gibbous9Sat
10Sun1:259.31:419.17:300.47:470.46:455:05Waning Gibbous10Sun
11Mon2:029.12:228.78:110.68:250.76:435:06Waning Gibbous11Mon
12Tue2:428.93:078.38:540.99:071.16:425:07Third Quarter12Tue
13Wed3:258.73:567.99:421.19:541.46:405:09Third Quarter13Wed
14Thu4:148.64:507.610:341.310:441.66:395:10Third Quarter14Thu
15Fri5:068.55:497.511:311.311:401.76:385:11Third Quarter15Fri
16Sat6:048.66:507.712:321.16:365:13Waning Crescent16Sat
17Sun7:038.97:478.012:401.51:310.86:355:14Waning Crescent17Sun
18Mon7:599.48:388.51:381.12:230.26:335:15Waning Crescent18Mon
19Tue8:5010.09:259.22:320.63:11-0.46:325:17Waning Crescent19Tue
20Wed9:3810.510:109.83:21-0.13:56-0.96:305:18New Moon20Wed
21Thu10:2610.910:5610.44:10-0.74:41-1.46:285:19New Moon21Thu
22Fri11:1411.111:4110.84:59-1.25:27-1.66:275:21New Moon22Fri
23Sat12:0211.25:48-1.56:13-1.76:255:22Waxing Crescent23Sat
24Sun12:2711.112:5211.06:38-1.77:00-1.56:245:23Waxing Crescent24Sun
25Mon1:1511.11:4410.57:30-1.57:50-1.16:225:25Waxing Crescent25Mon
26Tue2:0710.92:4110.08:25-1.28:44-0.56:205:26First Quarter26Tue
27Wed3:0310.53:439.49:25-0.79:430.06:195:27First Quarter27Wed
28Thu4:0510.14:498.910:30-0.310:480.56:175:28First Quarter28Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8418150)

Common Questions About Portland, ME Tides

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What time does the tide turn (slack tide) in Portland, ME today?

Slack tide in Portland, ME is approximately 12:15 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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

Portland, ME is currently in a transitional phase. Tonight's moon is 23% 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 (23% 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