Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Friday, July 17, 2026
The tide is currently rising in Portland, ME.
Next low tide (tomorrow) : 8:48 am (-0.8 ft)
Next high tide (tomorrow) : in 5h 56m at 2:28 am (10.8 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Dec 2067

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:318.76:598.112:071.412:481.46:544:05Waning Crescent1Thu
2Fri7:199.07:518.312:571.41:391.06:554:05Waning Crescent2Fri
3Sat8:049.48:398.51:451.32:260.66:564:04Waning Crescent3Sat
4Sun8:469.89:248.72:301.03:100.16:574:04Waning Crescent4Sun
5Mon9:2910.210:089.03:130.83:54-0.36:584:04New Moon5Mon
6Tue10:1210.610:529.23:570.54:38-0.76:594:04New Moon6Tue
7Wed10:5710.811:389.44:420.35:23-1.07:004:04New Moon7Wed
8Thu11:4411.05:290.16:09-1.17:014:04Waxing Crescent8Thu
9Fri12:259.512:3211.06:180.06:58-1.17:024:04Waxing Crescent9Fri
10Sat1:149.61:2410.87:100.07:48-1.07:034:04Waxing Crescent10Sat
11Sun2:079.72:2010.48:060.18:42-0.87:044:04First Quarter11Sun
12Mon3:049.73:2110.09:070.29:39-0.47:054:04First Quarter12Mon
13Tue4:039.84:259.610:110.210:38-0.17:064:04First Quarter13Tue
14Wed5:039.95:329.211:170.211:390.27:064:04First Quarter14Wed
15Thu6:0410.06:399.012:250.17:074:04Waxing Gibbous15Thu
16Fri7:0510.17:439.012:410.41:30-0.17:084:05Waxing Gibbous16Fri
17Sat8:0210.38:429.01:420.52:29-0.47:084:05Waxing Gibbous17Sat
18Sun8:5410.49:359.12:370.53:22-0.67:094:05Waxing Gibbous18Sun
19Mon9:4410.510:249.13:280.54:11-0.77:104:06Full Moon19Mon
20Tue10:3010.411:099.14:150.54:56-0.77:104:06Full Moon20Tue
21Wed11:1310.311:529.04:590.65:39-0.67:114:07Full Moon21Wed
22Thu11:5510.15:420.66:18-0.47:114:07Waning Gibbous22Thu
23Fri12:328.912:349.96:220.86:57-0.17:124:08Waning Gibbous23Fri
24Sat1:118.81:149.67:030.97:340.17:124:08Waning Gibbous24Sat
25Sun1:508.71:559.27:441.18:130.47:124:09Waning Gibbous25Sun
26Mon2:318.72:388.88:281.38:530.77:134:09Waning Gibbous26Mon
27Tue3:148.63:258.49:151.49:361.07:134:10Third Quarter27Tue
28Wed3:588.64:168.110:051.510:211.27:134:11Third Quarter28Wed
29Thu4:458.65:097.910:581.511:091.47:134:12Third Quarter29Thu
30Fri5:338.76:067.811:531.37:144:12Third Quarter30Fri
31Sat6:258.97:047.812:011.512:511.07:144:13Waning Crescent31Sat
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 5:38 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 14% 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 Waxing Crescent (14% 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