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 53m 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 - Oct 1917

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:3711.111:0810.64:20-1.14:50-1.65:355:20Full Moon1Mon
2Tue11:2511.211:5910.45:09-1.05:41-1.65:365:19Waning Gibbous2Tue
3Wed12:1411.05:58-0.76:33-1.35:385:17Waning Gibbous3Wed
4Thu12:519.91:0410.76:47-0.27:25-0.95:395:15Waning Gibbous4Thu
5Fri1:449.41:5610.27:380.38:21-0.35:405:13Waning Gibbous5Fri
6Sat2:418.82:539.68:330.99:200.25:415:11Third Quarter6Sat
7Sun3:418.43:549.19:331.310:220.75:425:10Third Quarter7Sun
8Mon4:428.14:578.810:361.611:241.05:435:08Third Quarter8Mon
9Tue5:438.05:598.611:401.75:455:06Third Quarter9Tue
10Wed6:418.16:588.612:251.112:421.65:465:04Waning Crescent10Wed
11Thu7:338.37:508.71:191.11:381.45:475:03Waning Crescent11Thu
12Fri8:198.68:378.82:061.02:251.15:485:01Waning Crescent12Fri
13Sat8:598.99:198.92:470.93:070.85:504:59Waning Crescent13Sat
14Sun9:369.29:588.93:230.83:450.55:514:57New Moon14Sun
15Mon10:109.410:368.93:560.84:210.35:524:56New Moon15Mon
16Tue10:439.511:128.84:290.84:560.15:534:54New Moon16Tue
17Wed11:169.611:488.75:030.85:320.15:554:52New Moon17Wed
18Thu11:519.65:380.96:090.15:564:51Waxing Crescent18Thu
19Fri12:258.612:289.66:160.96:490.15:574:49Waxing Crescent19Fri
20Sat1:058.51:099.66:571.07:340.25:584:48Waxing Crescent20Sat
21Sun1:508.31:579.57:431.28:240.36:004:46Waxing Crescent21Sun
22Mon2:428.22:519.48:361.29:200.46:014:44First Quarter22Mon
23Tue3:408.23:539.39:351.210:190.46:024:43First Quarter23Tue
24Wed4:428.44:589.310:391.111:210.36:034:41First Quarter24Wed
25Thu5:448.86:059.411:450.86:054:40Waxing Gibbous25Thu
26Fri6:469.37:109.612:230.112:520.36:064:38Waxing Gibbous26Fri
27Sat7:439.98:119.91:22-0.11:54-0.36:074:37Waxing Gibbous27Sat
28Sun8:3610.49:0710.02:17-0.42:50-0.96:094:35Full Moon28Sun
29Mon9:2610.910:0010.13:08-0.53:43-1.36:104:34Full Moon29Mon
30Tue10:1411.110:5210.03:58-0.54:34-1.56:114:32Full Moon30Tue
31Wed11:0311.111:429.84:47-0.45:25-1.46:134:31Full Moon31Wed
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