Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 1h 13m at 7:02 am (0.1 ft)
Next high tide : 1:17 pm (8.9 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 5:29 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Feb 1964

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:169.61:2910.17:15-0.17:46-0.56:584:50Waning Gibbous1Sat
2Sun2:029.42:179.68:040.28:310.06:574:52Waning Gibbous2Sun
3Mon2:499.23:088.98:550.69:180.56:564:53Third Quarter3Mon
4Tue3:378.94:018.49:490.910:061.06:544:54Third Quarter4Tue
5Wed4:268.74:577.910:441.210:571.56:534:56Third Quarter5Wed
6Thu5:188.55:567.611:431.311:521.86:524:57Third Quarter6Thu
7Fri6:148.56:577.512:451.36:514:59Waning Crescent7Fri
8Sat7:108.67:547.612:501.91:431.16:505:00Waning Crescent8Sat
9Sun8:038.88:457.91:461.82:340.86:485:01Waning Crescent9Sun
10Mon8:509.19:308.22:341.53:180.56:475:03Waning Crescent10Mon
11Tue9:349.510:118.53:181.23:580.16:465:04New Moon11Tue
12Wed10:149.810:508.83:590.84:36-0.26:445:05New Moon12Wed
13Thu10:5410.111:279.14:380.55:13-0.56:435:07New Moon13Thu
14Fri11:3310.35:180.25:50-0.76:415:08New Moon14Fri
15Sat12:049.412:1210.45:59-0.16:28-0.86:405:09Waxing Crescent15Sat
16Sun12:419.712:5410.36:42-0.37:08-0.86:395:11Waxing Crescent16Sun
17Mon1:219.91:3810.17:27-0.47:51-0.76:375:12Waxing Crescent17Mon
18Tue2:0510.02:289.78:17-0.48:38-0.46:365:13Waxing Crescent18Tue
19Wed2:5410.03:249.39:11-0.39:310.06:345:15First Quarter19Wed
20Thu3:489.94:258.910:11-0.210:280.46:335:16First Quarter20Thu
21Fri4:489.85:338.611:150.011:310.76:315:17First Quarter21Fri
22Sat5:549.86:458.512:260.06:305:19Waxing Gibbous22Sat
23Sun7:039.87:538.712:400.81:36-0.26:285:20Waxing Gibbous23Sun
24Mon8:0910.18:549.01:490.62:39-0.56:265:21Waxing Gibbous24Mon
25Tue9:0910.49:499.32:500.33:35-0.86:255:23Waxing Gibbous25Tue
26Wed10:0310.610:399.63:460.04:25-1.06:235:24Full Moon26Wed
27Thu10:5310.611:259.84:37-0.35:12-1.06:215:25Full Moon27Thu
28Fri11:3910.55:24-0.45:54-0.96:205:27Full Moon28Fri
29Sat12:079.812:2310.36:09-0.46:35-0.66:185:28Waning Gibbous29Sat
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 10:09 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 96% 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 Waning Gibbous (96% 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