Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Portland, ME.
Next low tide (tomorrow) : in 5h 29m at 5:07 am (-0.9 ft)
Next high tide (tomorrow) : 11:21 am (9.6 ft)
Sunset today : 7:50 pm
Sunrise tomorrow : 5:41 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Feb 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:229.95:549.111:38-0.111:590.37:585:50First Quarter1Tue
2Wed6:239.77:008.712:450.27:575:52First Quarter2Wed
3Thu7:259.58:078.41:020.71:530.37:565:53Waxing Gibbous3Thu
4Fri8:279.59:088.42:071.02:560.27:555:54Waxing Gibbous4Fri
5Sat9:239.510:028.53:061.03:510.17:535:56Waxing Gibbous5Sat
6Sun10:139.610:508.63:580.94:39-0.17:525:57Waxing Gibbous6Sun
7Mon10:589.711:338.74:440.85:22-0.27:515:58Full Moon7Mon
8Tue11:399.85:260.76:01-0.27:506:00Full Moon8Tue
9Wed12:128.812:179.86:050.66:36-0.27:486:01Full Moon9Wed
10Thu12:488.912:539.76:410.67:09-0.17:476:03Full Moon10Thu
11Fri1:228.91:289.67:150.67:410.07:466:04Waning Gibbous11Fri
12Sat1:548.92:029.47:500.68:130.17:446:05Waning Gibbous12Sat
13Sun2:278.92:389.18:270.78:480.37:436:07Waning Gibbous13Sun
14Mon3:028.93:178.89:070.79:260.67:426:08Waning Gibbous14Mon
15Tue3:408.94:008.59:500.810:080.87:406:09Third Quarter15Tue
16Wed4:228.94:498.210:390.910:551.07:396:11Third Quarter16Wed
17Thu5:118.95:448.011:320.911:471.17:376:12Third Quarter17Thu
18Fri6:059.06:468.012:310.77:366:13Third Quarter18Fri
19Sat7:059.37:518.212:451.11:350.57:346:15Waning Crescent19Sat
20Sun8:089.78:558.61:480.92:390.07:336:16Waning Crescent20Sun
21Mon9:1010.39:539.22:510.43:38-0.67:316:17Waning Crescent21Mon
22Tue10:0710.810:479.83:49-0.14:32-1.27:306:19New Moon22Tue
23Wed11:0211.311:3910.34:45-0.75:24-1.77:286:20New Moon23Wed
24Thu11:5611.65:39-1.26:15-2.07:276:21New Moon24Thu
25Fri12:3010.712:4811.66:32-1.57:04-2.07:256:23Waxing Crescent25Fri
26Sat1:1911.01:4011.47:25-1.67:53-1.87:236:24Waxing Crescent26Sat
27Sun2:0911.02:3310.98:18-1.58:43-1.37:226:25Waxing Crescent27Sun
28Mon3:0010.73:2910.29:13-1.19:36-0.77:206:26Waxing Crescent28Mon
29Tue3:5410.44:289.510:11-0.610:310.07:186:28First Quarter29Tue
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 8:14 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 spring phase. Tonight's moon is 2% 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 maximum.

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 New Moon (2% illuminated). This places Portland, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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