Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Portland, ME.
Next low tide : in 5h 48m at 9:11 pm (0.5 ft)
Next high tide (tomorrow) : 3:19 am (9.4 ft)
Sunset today : 8:01 pm
Sunrise tomorrow : 5:32 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Oct 2088

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:0110.55:48-0.26:13-0.76:396:20Full Moon1Fri
2Sat12:2710.212:4110.76:28-0.36:57-0.96:416:18Waning Gibbous2Sat
3Sun1:1010.11:2410.97:11-0.37:43-0.96:426:17Waning Gibbous3Sun
4Mon1:5710.02:1010.87:57-0.28:32-0.86:436:15Waning Gibbous4Mon
5Tue2:479.83:0210.78:480.09:27-0.66:446:13Waning Gibbous5Tue
6Wed3:439.54:0010.49:430.310:26-0.36:456:11Third Quarter6Wed
7Thu4:469.35:0410.110:450.611:30-0.16:476:09Third Quarter7Thu
8Fri5:529.26:1210.011:510.76:486:08Third Quarter8Fri
9Sat6:589.27:219.912:360.01:000.66:496:06Waning Crescent9Sat
10Sun8:039.58:2710.01:430.02:090.46:506:04Waning Crescent10Sun
11Mon9:029.99:2610.12:45-0.13:110.06:516:03Waning Crescent11Mon
12Tue9:5410.210:2010.23:39-0.34:06-0.36:536:01Waning Crescent12Tue
13Wed10:4210.511:0910.24:28-0.34:55-0.66:545:59New Moon13Wed
14Thu11:2710.611:5610.15:14-0.25:42-0.76:555:57New Moon14Thu
15Fri12:0910.55:57-0.16:26-0.66:565:56New Moon15Fri
16Sat12:409.812:5010.46:380.27:08-0.46:575:54Waxing Crescent16Sat
17Sun1:229.51:2910.17:180.57:49-0.16:595:53Waxing Crescent17Sun
18Mon2:049.22:099.87:580.98:310.27:005:51Waxing Crescent18Mon
19Tue2:478.82:529.48:391.29:150.67:015:49Waxing Crescent19Tue
20Wed3:338.53:389.19:251.510:020.97:025:48First Quarter20Wed
21Thu4:238.24:298.810:141.810:521.27:045:46First Quarter21Thu
22Fri5:158.15:238.611:071.911:451.37:055:45First Quarter22Fri
23Sat6:088.16:198.612:032.07:065:43First Quarter23Sat
24Sun7:018.37:158.612:381.31:001.87:075:42First Quarter24Sun
25Mon7:528.68:108.81:301.21:551.47:095:40Waxing Gibbous25Mon
26Tue8:409.09:009.12:201.02:470.97:105:39Waxing Gibbous26Tue
27Wed9:239.69:469.53:060.63:340.37:115:37Waxing Gibbous27Wed
28Thu10:0410.110:319.83:490.34:18-0.37:135:36Full Moon28Thu
29Fri10:4610.611:1610.04:320.05:03-0.87:145:34Full Moon29Fri
30Sat11:2911.05:15-0.35:48-1.27:155:33Full Moon30Sat
31Sun12:0310.212:1411.36:01-0.56:36-1.47:165:32Full Moon31Sun
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 75% 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 Waning Gibbous (75% 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