Tides Today & Tomorrow in Boothbay Harbor, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Boothbay Harbor, ME.
Next low tide : 12:18 pm (2.0 ft)
Next high tide : in 10m at 6:29 am (7.5 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 - Oct 1918

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:148.89:329.23:000.53:180.86:356:21Waning Crescent1Tue
2Wed10:009.010:199.23:470.54:060.66:366:19Waning Crescent2Wed
3Thu10:409.211:019.24:280.54:480.46:376:17New Moon3Thu
4Fri11:179.311:409.15:050.55:260.36:386:15New Moon4Fri
5Sat11:529.45:390.66:030.26:406:14New Moon5Sat
6Sun12:179.012:259.46:120.76:370.36:416:12New Moon6Sun
7Mon12:528.812:589.36:440.97:110.36:426:10Waxing Crescent7Mon
8Tue1:288.61:319.27:181.17:470.56:436:08Waxing Crescent8Tue
9Wed2:048.42:079.17:541.38:260.66:446:07Waxing Crescent9Wed
10Thu2:438.12:469.08:331.59:090.86:466:05Waxing Crescent10Thu
11Fri3:267.93:328.99:181.69:570.96:476:03First Quarter11Fri
12Sat4:167.84:258.810:081.710:501.06:486:01First Quarter12Sat
13Sun5:117.85:228.811:041.611:460.96:496:00First Quarter13Sun
14Mon6:088.06:239.012:041.46:505:58First Quarter14Mon
15Tue7:068.57:259.312:440.71:061.06:525:56Waxing Gibbous15Tue
16Wed8:039.18:269.61:430.32:080.46:535:55Waxing Gibbous16Wed
17Thu8:579.89:2210.02:38-0.13:06-0.36:545:53Waxing Gibbous17Thu
18Fri9:4710.510:1610.43:30-0.54:00-1.06:555:51Full Moon18Fri
19Sat10:3711.111:0910.54:20-0.94:53-1.66:575:50Full Moon19Sat
20Sun11:2611.45:10-1.05:45-1.96:585:48Full Moon20Sun
21Mon12:0210.512:1711.56:00-1.06:37-1.96:595:46Waning Gibbous21Mon
22Tue12:5510.31:0811.46:51-0.77:30-1.67:015:45Waning Gibbous22Tue
23Wed1:4910.02:0111.07:44-0.48:25-1.27:025:43Waning Gibbous23Wed
24Thu2:459.62:5810.48:390.19:23-0.67:035:42Waning Gibbous24Thu
25Fri3:459.13:599.99:390.610:25-0.17:045:40Third Quarter25Fri
26Sat4:488.85:049.410:431.011:280.37:065:39Third Quarter26Sat
27Sun4:518.65:099.010:491.211:310.66:074:37Third Quarter27Sun
28Mon5:528.56:128.811:561.36:084:36Waning Crescent28Mon
29Tue6:508.67:118.712:310.812:581.26:104:34Waning Crescent29Tue
30Wed7:418.88:048.71:250.91:530.96:114:33Waning Crescent30Wed
31Thu8:269.18:518.72:120.92:410.66:124:31Waning Crescent31Thu
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 9:23 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 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