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 4h 08m 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 - Jan 1919

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:019.610:398.43:430.94:22-0.17:124:11New Moon1Wed
2Thu10:409.811:178.74:220.75:00-0.47:124:11New Moon2Thu
3Fri11:1910.011:558.95:020.55:38-0.67:124:12New Moon3Fri
4Sat11:5910.15:440.36:17-0.77:124:13Waxing Crescent4Sat
5Sun12:349.112:4110.16:270.16:58-0.87:124:14Waxing Crescent5Sun
6Mon1:159.31:269.97:130.07:42-0.77:124:15Waxing Crescent6Mon
7Tue2:009.42:159.68:030.08:29-0.57:124:16Waxing Crescent7Tue
8Wed2:499.53:119.38:580.09:21-0.37:124:17First Quarter8Wed
9Thu3:439.64:118.99:570.010:170.07:124:18First Quarter9Thu
10Fri4:419.75:168.611:000.011:170.37:124:19First Quarter10Fri
11Sat5:439.76:258.512:08-0.17:114:21Waxing Gibbous11Sat
12Sun6:489.97:338.612:220.41:16-0.37:114:22Waxing Gibbous12Sun
13Mon7:5110.18:358.81:270.32:19-0.67:104:23Waxing Gibbous13Mon
14Tue8:5010.39:329.02:280.23:16-0.97:104:24Full Moon14Tue
15Wed9:4410.510:249.23:240.04:08-1.17:104:25Full Moon15Wed
16Thu10:3510.511:139.44:16-0.24:57-1.27:094:26Full Moon16Thu
17Fri11:2410.411:599.45:06-0.25:43-1.17:094:28Full Moon17Fri
18Sat12:0910.25:53-0.26:26-0.87:084:29Waning Gibbous18Sat
19Sun12:429.312:539.86:390.07:07-0.57:074:30Waning Gibbous19Sun
20Mon1:249.21:379.37:240.37:480.07:074:31Waning Gibbous20Mon
21Tue2:069.02:238.88:100.58:300.47:064:33Waning Gibbous21Tue
22Wed2:518.83:118.38:580.89:140.97:054:34Third Quarter22Wed
23Thu3:378.64:037.89:491.110:011.27:044:35Third Quarter23Thu
24Fri4:268.44:587.510:431.310:511.67:044:37Third Quarter24Fri
25Sat5:188.35:577.311:411.411:461.77:034:38Third Quarter25Sat
26Sun6:148.36:577.312:421.37:024:39Waning Crescent26Sun
27Mon7:098.57:527.512:441.71:381.07:014:41Waning Crescent27Mon
28Tue8:018.88:417.81:391.52:270.67:004:42Waning Crescent28Tue
29Wed8:489.29:268.22:271.23:110.26:594:43Waning Crescent29Wed
30Thu9:319.610:078.63:120.83:52-0.26:584:45New Moon30Thu
31Fri10:1410.010:489.03:550.34:31-0.66:574:46New Moon31Fri
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