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 22m at 8:48 am (0.1 ft)
Next high tide : 3:03 pm (9.6 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 - Jan 1958

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:119.07:478.012:471.51:361.07:144:14Waxing Gibbous1Wed
2Thu8:009.38:378.31:391.32:250.57:144:15Waxing Gibbous2Thu
3Fri8:459.79:238.62:271.03:100.07:144:16Waxing Gibbous3Fri
4Sat9:2910.210:079.03:120.73:53-0.47:144:17Full Moon4Sat
5Sun10:1310.610:519.43:570.34:37-0.97:144:18Full Moon5Sun
6Mon10:5810.911:359.74:43-0.15:20-1.27:144:19Full Moon6Mon
7Tue11:4411.15:29-0.46:05-1.47:144:20Waning Gibbous7Tue
8Wed12:2010.012:3111.16:18-0.66:51-1.57:144:21Waning Gibbous8Wed
9Thu1:0710.21:2110.97:08-0.67:39-1.47:134:22Waning Gibbous9Thu
10Fri1:5710.22:1510.58:01-0.68:31-1.17:134:23Waning Gibbous10Fri
11Sat2:5010.23:1310.08:59-0.49:26-0.77:134:24Third Quarter11Sat
12Sun3:4810.24:169.510:01-0.210:24-0.27:124:25Third Quarter12Sun
13Mon4:4810.15:229.111:06-0.111:250.17:124:26Third Quarter13Mon
14Tue5:5110.06:308.912:150.07:124:28Waning Crescent14Tue
15Wed6:5510.07:378.812:310.41:23-0.17:114:29Waning Crescent15Wed
16Thu7:5610.18:388.91:350.52:24-0.47:114:30Waning Crescent16Thu
17Fri8:5210.29:329.12:340.43:19-0.67:104:31Waning Crescent17Fri
18Sat9:4310.310:219.23:270.34:08-0.77:094:33New Moon18Sat
19Sun10:3010.311:069.34:150.24:53-0.77:094:34New Moon19Sun
20Mon11:1410.311:479.35:000.25:34-0.67:084:35New Moon20Mon
21Tue11:5410.15:420.26:13-0.57:074:36New Moon21Tue
22Wed12:269.212:339.86:220.36:49-0.27:074:38Waxing Crescent22Wed
23Thu1:039.21:119.57:010.57:250.07:064:39Waxing Crescent23Thu
24Fri1:409.11:519.17:410.78:010.47:054:40Waxing Crescent24Fri
25Sat2:198.92:338.78:230.98:410.77:044:42Waxing Crescent25Sat
26Sun3:008.83:198.39:081.19:241.07:034:43First Quarter26Sun
27Mon3:448.74:098.09:571.210:101.37:024:44First Quarter27Mon
28Tue4:328.65:037.710:501.311:001.57:014:46First Quarter28Tue
29Wed5:248.66:017.611:461.311:551.57:004:47First Quarter29Wed
30Thu6:208.87:027.812:461.06:594:48Waxing Gibbous30Thu
31Fri7:169.17:588.112:531.41:440.66:584:50Waxing Gibbous31Fri
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 11:55 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