Tides Today & Tomorrow in Boothbay Harbor, ME

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Boothbay Harbor, ME.
Next low tide : 9:41 am (0.7 ft)
Next high tide : in 12m at 3:41 am (8.9 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 - May 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:3810.12:178.98:00-0.58:100.65:307:40Waning Gibbous1Sat
2Sun2:2210.03:058.88:47-0.48:590.75:297:41Waning Gibbous2Sun
3Mon3:129.94:018.79:40-0.39:550.95:287:42Third Quarter3Mon
4Tue4:099.75:018.610:38-0.110:561.05:267:43Third Quarter4Tue
5Wed5:139.56:058.711:390.05:257:44Third Quarter5Wed
6Thu6:209.47:109.012:020.912:430.05:247:46Third Quarter6Thu
7Fri7:299.58:139.41:110.71:48-0.15:227:47Waning Crescent7Fri
8Sat8:359.69:109.92:180.32:48-0.35:217:48Waning Crescent8Sat
9Sun9:359.810:0110.33:20-0.23:42-0.45:207:49Waning Crescent9Sun
10Mon10:309.910:5010.64:15-0.74:32-0.45:187:50New Moon10Mon
11Tue11:229.911:3710.75:06-1.05:20-0.35:177:51New Moon11Tue
12Wed12:129.85:55-1.26:06-0.15:167:53New Moon12Wed
13Thu12:2210.71:009.66:42-1.16:520.25:157:54New Moon13Thu
14Fri1:0610.51:469.37:28-0.87:360.65:147:55Waxing Crescent14Fri
15Sat1:5010.12:338.98:14-0.58:211.05:137:56Waxing Crescent15Sat
16Sun2:359.73:228.59:010.09:091.45:127:57Waxing Crescent16Sun
17Mon3:239.24:138.29:500.410:001.75:107:58Waxing Crescent17Mon
18Tue4:158.85:058.110:410.810:551.95:097:59First Quarter18Tue
19Wed5:098.55:588.011:321.011:512.05:088:00First Quarter19Wed
20Thu6:058.36:518.112:251.25:088:01First Quarter20Thu
21Fri7:028.27:428.312:491.91:171.35:078:02First Quarter21Fri
22Sat7:588.28:308.61:461.72:071.25:068:03Waxing Gibbous22Sat
23Sun8:498.39:139.02:391.42:521.15:058:04Waxing Gibbous23Sun
24Mon9:368.59:539.33:250.93:340.95:048:05Waxing Gibbous24Mon
25Tue10:218.710:319.74:070.54:130.85:038:06Waxing Gibbous25Tue
26Wed11:038.811:1010.04:480.04:530.65:028:07Full Moon26Wed
27Thu11:469.011:5010.35:29-0.35:350.55:028:08Full Moon27Thu
28Fri12:309.16:12-0.66:180.45:018:09Full Moon28Fri
29Sat12:3310.51:159.26:57-0.87:040.45:008:10Waning Gibbous29Sat
30Sun1:1810.62:039.27:44-0.97:530.45:008:11Waning Gibbous30Sun
31Mon2:0710.52:549.18:34-0.88:460.54:598:12Waning Gibbous31Mon
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 6:41 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