Tides Today & Tomorrow in Boothbay Harbor, ME

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Boothbay Harbor, ME.
Next low tide : in 3h 16m at 10:19 pm (0.7 ft)
Next high tide (tomorrow) : 4:34 am (8.3 ft)
Sunset today : 7:38 pm
Sunrise tomorrow : 5:46 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8416828
Common Questions About Tides

Boothbay Harbor, ME Tides - Aug 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:268.76:100.06:120.85:268:02New Moon1Fri
2Sat12:299.81:038.96:45-0.16:510.75:278:01New Moon2Sat
3Sun1:079.81:399.17:21-0.27:310.55:288:00Waxing Crescent3Sun
4Mon1:459.82:179.38:00-0.38:150.45:307:58Waxing Crescent4Mon
5Tue2:279.72:589.48:41-0.39:020.35:317:57Waxing Crescent5Tue
6Wed3:149.53:449.69:26-0.29:530.25:327:56First Quarter6Wed
7Thu4:059.34:359.710:150.010:490.25:337:54First Quarter7Thu
8Fri5:029.15:299.811:080.111:480.15:347:53First Quarter8Fri
9Sat6:038.96:2910.012:050.35:357:52First Quarter9Sat
10Sun7:098.87:3210.112:520.01:080.45:367:50Waxing Gibbous10Sun
11Mon8:168.98:3610.41:59-0.22:120.35:377:49Waxing Gibbous11Mon
12Tue9:199.19:3610.73:03-0.53:140.15:397:47Waxing Gibbous12Tue
13Wed10:189.410:3310.94:01-0.84:12-0.25:407:46Full Moon13Wed
14Thu11:129.711:2710.94:56-1.15:07-0.45:417:44Full Moon14Thu
15Fri12:049.95:47-1.26:00-0.55:427:43Full Moon15Fri
16Sat12:1910.912:539.96:36-1.16:51-0.45:437:41Waning Gibbous16Sat
17Sun1:0810.61:409.97:23-0.97:40-0.25:447:40Waning Gibbous17Sun
18Mon1:5610.22:269.78:08-0.58:290.05:457:38Waning Gibbous18Mon
19Tue2:449.73:129.58:530.09:190.45:467:37Waning Gibbous19Tue
20Wed3:349.14:009.29:400.510:110.75:487:35Third Quarter20Wed
21Thu4:268.64:508.910:280.911:051.05:497:33Third Quarter21Thu
22Fri5:208.25:418.711:181.35:507:32Third Quarter22Fri
23Sat6:167.96:358.612:011.212:111.65:517:30Third Quarter23Sat
24Sun7:147.77:318.61:001.31:071.85:527:28Waning Crescent24Sun
25Mon8:127.78:258.71:591.32:041.75:537:27Waning Crescent25Mon
26Tue9:047.99:159.02:521.12:551.65:547:25Waning Crescent26Tue
27Wed9:518.210:009.33:380.83:411.35:567:23Waning Crescent27Wed
28Thu10:338.510:429.64:200.54:231.05:577:22New Moon28Thu
29Fri11:138.811:229.84:580.25:040.65:587:20New Moon29Fri
30Sat11:519.15:35-0.15:440.35:597:18New Moon30Sat
31Sun12:0110.012:299.46:13-0.36:250.06:007:16New Moon31Sun
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 1:26 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 36% 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 (36% 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