Tides Today & Tomorrow in Boothbay Harbor, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Boothbay Harbor, ME.
Next low tide : in 5h 13m at 12:18 pm (2.0 ft)
Next high tide : 6:42 pm (8.5 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8416828
Common Questions About Tides

Boothbay Harbor, ME Tides - Sep 1918

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:428.48:599.62:270.32:391.06:017:16Waning Crescent1Sun
2Mon9:378.69:539.63:240.23:350.86:027:14Waning Crescent2Mon
3Tue10:268.810:409.64:130.14:240.66:037:12New Moon3Tue
4Wed11:099.011:239.64:570.15:090.56:047:10New Moon4Wed
5Thu11:489.25:360.15:490.46:057:09New Moon5Thu
6Fri12:039.512:259.26:120.26:270.46:067:07New Moon6Fri
7Sat12:419.312:599.26:450.47:030.46:077:05Waxing Crescent7Sat
8Sun1:179.11:329.27:170.67:390.56:097:03Waxing Crescent8Sun
9Mon1:538.82:059.17:510.88:160.76:107:01Waxing Crescent9Mon
10Tue2:318.52:429.08:271.18:560.96:116:59Waxing Crescent10Tue
11Wed3:128.23:228.89:061.49:411.16:126:58First Quarter11Wed
12Thu3:577.94:088.79:501.610:301.26:136:56First Quarter12Thu
13Fri4:477.65:008.610:401.711:241.36:146:54First Quarter13Fri
14Sat5:427.55:568.711:341.86:156:52First Quarter14Sat
15Sun6:417.66:568.912:211.212:321.66:166:50Waxing Gibbous15Sun
16Mon7:418.07:569.31:210.91:341.36:186:48Waxing Gibbous16Mon
17Tue8:378.58:539.82:190.52:330.76:196:47Waxing Gibbous17Tue
18Wed9:289.29:4610.23:12-0.13:280.06:206:45Waxing Gibbous18Wed
19Thu10:169.910:3810.64:01-0.64:20-0.76:216:43Full Moon19Thu
20Fri11:0410.611:2910.84:48-1.05:12-1.26:226:41Full Moon20Fri
21Sat11:5211.05:36-1.26:03-1.66:236:39Full Moon21Sat
22Sun12:2110.812:4111.36:24-1.26:55-1.76:246:37Waning Gibbous22Sun
23Mon1:1210.61:3111.27:14-1.07:48-1.56:266:36Waning Gibbous23Mon
24Tue2:0610.22:2311.08:05-0.68:43-1.26:276:34Waning Gibbous24Tue
25Wed3:029.73:2010.58:59-0.19:43-0.76:286:32Third Quarter25Wed
26Thu4:049.24:2210.09:590.410:47-0.26:296:30Third Quarter26Thu
27Fri5:098.85:279.611:030.811:540.36:306:28Third Quarter27Fri
28Sat6:158.56:349.312:111.16:316:26Third Quarter28Sat
29Sun7:208.47:409.21:010.51:191.26:336:24Waning Crescent29Sun
30Mon8:218.58:409.22:050.62:231.16:346:23Waning Crescent30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8416828)

Common Questions About Boothbay Harbor, ME Tides

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What time does the tide turn (slack tide) in Boothbay Harbor, ME today?

Slack tide in Boothbay Harbor, ME is approximately 3:30 pm — 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 Boothbay Harbor, ME?

Boothbay Harbor, ME is currently in a transitional phase. Tonight's moon is 65% 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 Boothbay Harbor, 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 Boothbay Harbor, ME?

Tide predictions for Boothbay Harbor, 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 Boothbay Harbor, ME?

Tide data for Boothbay Harbor, ME is sourced from NOAA Station #8416828. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8416828.

What is the moon phase in Boothbay Harbor, ME tonight?

Tonight the moon over Boothbay Harbor, ME is First Quarter (65% illuminated). This places Boothbay Harbor, 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