Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Portland, ME.
Next low tide : 11:07 am (0.7 ft)
Next high tide : in 4h 47m at 5:04 am (8.8 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 5:35 am
Moon phase : Third Quarter (44% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Dec 2093

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:4110.410:149.43:260.24:02-0.66:554:05Full Moon1Tue
2Wed10:2410.410:599.34:100.34:47-0.66:564:04Full Moon2Wed
3Thu11:0510.311:429.24:520.55:28-0.56:574:04Full Moon3Thu
4Fri11:4410.15:320.76:08-0.36:584:04Full Moon4Fri
5Sat12:229.012:239.96:111.06:47-0.16:594:04Waning Gibbous5Sat
6Sun1:028.71:019.66:501.27:260.27:004:04Waning Gibbous6Sun
7Mon1:438.51:429.37:311.48:070.57:014:04Waning Gibbous7Mon
8Tue2:278.32:279.08:151.68:510.77:024:04Waning Gibbous8Tue
9Wed3:138.23:158.79:031.89:370.97:034:04Third Quarter9Wed
10Thu4:018.24:068.59:541.810:241.07:044:04Third Quarter10Thu
11Fri4:498.34:598.410:471.811:131.17:044:04Third Quarter11Fri
12Sat5:388.55:558.411:431.67:054:04Third Quarter12Sat
13Sun6:288.86:518.512:031.012:391.27:064:04Waning Crescent13Sun
14Mon7:169.37:458.712:550.91:330.67:074:04Waning Crescent14Mon
15Tue8:039.98:369.01:450.62:240.07:074:04Waning Crescent15Tue
16Wed8:4910.49:259.42:330.33:12-0.67:084:05New Moon16Wed
17Thu9:3610.910:159.73:210.04:00-1.27:094:05New Moon17Thu
18Fri10:2411.311:059.94:09-0.34:50-1.57:094:05New Moon18Fri
19Sat11:1411.511:5610.04:59-0.55:40-1.77:104:06New Moon19Sat
20Sun12:0511.55:50-0.66:31-1.87:104:06Waxing Crescent20Sun
21Mon12:4810.012:5811.36:43-0.57:24-1.67:114:07Waxing Crescent21Mon
22Tue1:429.91:5511.07:39-0.38:20-1.27:114:07Waxing Crescent22Tue
23Wed2:419.82:5610.48:400.09:18-0.87:124:08First Quarter23Wed
24Thu3:429.74:009.99:440.210:19-0.47:124:09First Quarter24Thu
25Fri4:439.65:069.410:510.411:200.07:134:09First Quarter25Fri
26Sat5:459.66:139.111:590.47:134:10First Quarter26Sat
27Sun6:469.77:188.912:220.31:060.37:134:11Waxing Gibbous27Sun
28Mon7:439.88:188.91:230.52:070.17:134:11Waxing Gibbous28Mon
29Tue8:359.99:118.92:180.63:00-0.27:134:12Waxing Gibbous29Tue
30Wed9:2210.09:598.93:070.73:47-0.37:144:13Full Moon30Wed
31Thu10:0510.010:428.83:520.74:31-0.47:144:14Full Moon31Thu
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 8:05 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 neap phase. Tonight's moon is 44% 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 minimum.

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 Third Quarter (44% illuminated). This places Portland, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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