Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Portland, ME.
Next low tide (tomorrow) : 3:12 am (-0.2 ft)
Next high tide : in 3h 10m at 8:37 pm (10.5 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 5:39 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Jun 1948

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:498.37:278.612:392.01:021.45:028:15Third Quarter1Tue
2Wed7:448.38:138.91:351.81:501.45:018:16Waning Crescent2Wed
3Thu8:378.38:579.32:281.42:361.35:018:17Waning Crescent3Thu
4Fri9:268.59:389.73:160.93:201.25:008:17Waning Crescent4Fri
5Sat10:138.610:1910.14:010.44:031.15:008:18Waning Crescent5Sat
6Sun10:588.811:0110.54:450.04:470.94:598:19New Moon6Sun
7Mon11:459.011:4610.75:30-0.45:320.74:598:19New Moon7Mon
8Tue12:329.16:16-0.76:190.64:598:20New Moon8Tue
9Wed12:3410.91:209.27:04-0.97:090.54:598:21Waxing Crescent9Wed
10Thu1:2311.02:119.37:54-0.98:010.54:588:21Waxing Crescent10Thu
11Fri2:1610.93:059.38:46-0.88:570.64:588:22Waxing Crescent11Fri
12Sat3:1210.64:039.49:42-0.79:580.74:588:22First Quarter12Sat
13Sun4:1310.35:039.510:39-0.511:020.74:588:23First Quarter13Sun
14Mon5:169.96:029.711:37-0.24:588:23First Quarter14Mon
15Tue6:219.67:009.912:070.712:350.14:588:24First Quarter15Tue
16Wed7:279.37:5810.11:140.51:340.34:588:24Waxing Gibbous16Wed
17Thu8:319.18:5310.32:190.22:320.54:588:24Waxing Gibbous17Thu
18Fri9:309.19:4410.43:190.03:260.74:588:25Waxing Gibbous18Fri
19Sat10:259.010:3210.54:12-0.34:170.84:588:25Full Moon19Sat
20Sun11:159.011:1910.45:02-0.45:041.04:598:25Full Moon20Sun
21Mon12:038.95:49-0.45:491.14:598:26Full Moon21Mon
22Tue12:0310.312:488.86:33-0.26:331.24:598:26Full Moon22Tue
23Wed12:4610.11:308.77:15-0.17:151.44:598:26Waning Gibbous23Wed
24Thu1:279.92:118.67:560.17:561.55:008:26Waning Gibbous24Thu
25Fri2:089.72:528.58:350.48:391.65:008:26Waning Gibbous25Fri
26Sat2:509.43:358.49:150.69:231.85:008:26Waning Gibbous26Sat
27Sun3:339.14:188.59:560.810:111.85:018:26Third Quarter27Sun
28Mon4:208.85:028.510:381.011:001.85:018:26Third Quarter28Mon
29Tue5:088.55:458.711:211.111:501.85:028:26Third Quarter29Tue
30Wed5:588.36:308.812:051.35:028:26Third Quarter30Wed
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 11:54 pm — 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 13% 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 Crescent (13% 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