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 (tomorrow) : 1:16 am (1.4 ft)
Next high tide : in 1h 10m at 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 1917

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:1110.210:3211.13:55-1.24:13-1.05:016:15Full Moon1Sat
2Sun11:0210.711:2511.14:45-1.45:07-1.35:026:13Full Moon2Sun
3Mon11:5111.05:34-1.46:00-1.45:036:12Waning Gibbous3Mon
4Tue12:1710.812:4011.06:23-1.16:53-1.35:046:10Waning Gibbous4Tue
5Wed1:1010.31:3110.77:12-0.77:48-0.95:056:08Waning Gibbous5Wed
6Thu2:069.72:2510.38:05-0.18:46-0.55:076:06Third Quarter6Thu
7Fri3:059.13:239.99:010.59:480.15:086:04Third Quarter7Fri
8Sat4:078.64:259.410:011.010:520.55:096:03Third Quarter8Sat
9Sun5:108.25:289.111:041.411:580.85:106:01Third Quarter9Sun
10Mon6:148.06:329.012:101.65:115:59Waning Crescent10Mon
11Tue7:168.07:319.01:020.91:131.55:125:57Waning Crescent11Tue
12Wed8:098.28:239.11:580.82:081.35:135:55Waning Crescent12Wed
13Thu8:558.49:099.22:450.72:551.15:145:54Waning Crescent13Thu
14Fri9:368.79:509.23:260.53:360.95:165:52New Moon14Fri
15Sat10:138.910:289.24:020.54:140.75:175:50New Moon15Sat
16Sun10:489.111:049.24:350.54:500.55:185:48New Moon16Sun
17Mon11:209.211:399.15:060.55:250.45:195:46New Moon17Mon
18Tue11:519.35:370.65:590.45:205:44Waxing Crescent18Tue
19Wed12:148.912:239.36:100.76:340.45:215:42Waxing Crescent19Wed
20Thu12:498.712:579.36:440.97:130.55:225:41Waxing Crescent20Thu
21Fri1:278.41:359.27:221.17:560.65:245:39Waxing Crescent21Fri
22Sat2:098.22:209.28:061.28:450.75:255:37First Quarter22Sat
23Sun2:598.03:129.18:551.49:400.85:265:35First Quarter23Sun
24Mon3:567.94:119.29:521.410:400.75:275:33First Quarter24Mon
25Tue4:588.05:159.310:531.311:430.65:285:31First Quarter25Tue
26Wed6:038.36:229.611:591.05:295:30Waxing Gibbous26Wed
27Thu7:078.87:279.912:470.21:060.55:305:28Waxing Gibbous27Thu
28Fri8:049.58:2610.31:46-0.22:07-0.25:325:26Waxing Gibbous28Fri
29Sat8:5710.19:2110.62:40-0.73:04-0.85:335:24Full Moon29Sat
30Sun9:4710.710:1510.73:31-1.03:58-1.35:345:22Full Moon30Sun
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 9:59 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