Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Sunday, August 23, 2026
The tide is currently falling in Portland, ME.
Next low tide (tomorrow) : in 6h 24m at 3:18 am (1.2 ft)
Next high tide (tomorrow) : 9:27 am (7.8 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waxing Gibbous (81% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Portland, ME Tides - Jan 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:489.69:278.52:311.13:140.17:144:14Waning Crescent1Sat
2Sun9:3110.110:128.83:150.93:57-0.37:144:15New Moon2Sun
3Mon10:1510.410:569.03:590.64:41-0.77:144:16New Moon3Mon
4Tue11:0010.811:419.34:450.35:26-1.17:144:16New Moon4Tue
5Wed11:4611.05:310.06:12-1.27:144:17Waxing Crescent5Wed
6Thu12:279.512:3411.06:20-0.16:59-1.37:144:18Waxing Crescent6Thu
7Fri1:159.61:2510.87:11-0.27:49-1.27:144:19Waxing Crescent7Fri
8Sat2:079.72:1910.58:05-0.18:41-0.97:144:20Waxing Crescent8Sat
9Sun3:029.73:1910.09:040.09:36-0.67:144:22First Quarter9Sun
10Mon3:599.84:219.610:070.110:34-0.27:134:23First Quarter10Mon
11Tue4:589.85:279.211:120.111:340.17:134:24First Quarter11Tue
12Wed5:599.96:358.912:200.17:134:25Waxing Gibbous12Wed
13Thu7:009.97:418.812:370.41:27-0.17:124:26Waxing Gibbous13Thu
14Fri7:5910.18:418.91:390.52:28-0.47:124:27Waxing Gibbous14Fri
15Sat8:5310.29:358.92:360.53:22-0.67:114:28Waxing Gibbous15Sat
16Sun9:4410.310:249.03:280.54:11-0.77:114:30Full Moon16Sun
17Mon10:3110.311:109.04:160.54:57-0.77:104:31Full Moon17Mon
18Tue11:1510.211:538.95:010.55:40-0.67:104:32Full Moon18Tue
19Wed11:5610.05:430.66:19-0.47:094:33Full Moon19Wed
20Thu12:328.912:369.86:230.76:57-0.27:094:35Waning Gibbous20Thu
21Fri1:118.81:159.57:030.87:340.17:084:36Waning Gibbous21Fri
22Sat1:498.71:559.17:441.08:120.47:074:37Waning Gibbous22Sat
23Sun2:298.62:388.78:271.28:520.77:064:38Waning Gibbous23Sun
24Mon3:108.53:248.39:131.39:341.07:064:40Third Quarter24Mon
25Tue3:548.44:148.010:031.410:191.37:054:41Third Quarter25Tue
26Wed4:418.45:087.710:561.511:081.57:044:42Third Quarter26Wed
27Thu5:318.56:077.611:521.47:034:44Third Quarter27Thu
28Fri6:248.77:077.712:011.612:521.17:024:45Waning Crescent28Fri
29Sat7:199.08:047.912:571.51:490.77:014:46Waning Crescent29Sat
30Sun8:129.58:558.31:531.22:410.17:004:48Waning Crescent30Sun
31Mon9:0210.19:448.82:450.83:30-0.56:594:49New Moon31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8418150)

Common Questions About Portland, ME Tides

Show All
What time does the tide turn (slack tide) in Portland, ME today?

Slack tide in Portland, ME is approximately 6:22 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 81% 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 Gibbous (81% 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