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 2h 52m 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 - Aug 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:379.36:079.811:410.15:268:03Third Quarter1Sun
2Mon6:428.87:079.712:260.212:420.65:278:01Waning Crescent2Mon
3Tue7:478.58:089.61:320.31:440.95:288:00Waning Crescent3Tue
4Wed8:498.49:049.62:350.32:441.05:297:59Waning Crescent4Wed
5Thu9:458.49:569.73:320.23:381.15:307:58Waning Crescent5Thu
6Fri10:358.510:439.74:220.14:261.05:317:56New Moon6Fri
7Sat11:208.511:269.75:080.05:101.05:327:55New Moon7Sat
8Sun12:028.65:490.05:511.05:337:54New Moon8Sun
9Mon12:069.712:408.66:270.16:291.05:357:52New Moon9Mon
10Tue12:449.61:168.77:020.17:061.05:367:51Waxing Crescent10Tue
11Wed1:219.41:518.77:350.27:431.05:377:49Waxing Crescent11Wed
12Thu1:579.22:268.78:090.48:211.05:387:48Waxing Crescent12Thu
13Fri2:349.03:018.78:430.69:011.15:397:47Waxing Crescent13Fri
14Sat3:138.73:398.79:210.79:451.15:407:45Waxing Crescent14Sat
15Sun3:578.44:218.810:020.910:321.15:417:44First Quarter15Sun
16Mon4:448.25:068.910:471.111:231.15:437:42First Quarter16Mon
17Tue5:368.05:569.011:361.25:447:40First Quarter17Tue
18Wed6:337.96:529.212:181.012:301.35:457:39Waxing Gibbous18Wed
19Thu7:358.07:519.61:190.71:291.15:467:37Waxing Gibbous19Thu
20Fri8:368.38:5110.02:200.32:290.85:477:36Waxing Gibbous20Fri
21Sat9:348.89:4810.63:18-0.23:270.35:487:34Waxing Gibbous21Sat
22Sun10:299.310:4311.04:13-0.84:23-0.25:497:33Full Moon22Sun
23Mon11:229.811:3711.35:05-1.25:18-0.65:507:31Full Moon23Mon
24Tue12:1410.25:57-1.56:12-1.05:527:29Full Moon24Tue
25Wed12:3111.31:0510.56:47-1.67:06-1.15:537:28Waning Gibbous25Wed
26Thu1:2511.21:5610.67:38-1.58:01-1.05:547:26Waning Gibbous26Thu
27Fri2:1910.82:4810.58:28-1.18:57-0.85:557:24Waning Gibbous27Fri
28Sat3:1510.23:4310.39:22-0.69:57-0.55:567:22Third Quarter28Sat
29Sun4:159.64:4110.010:180.010:59-0.15:577:21Third Quarter29Sun
30Mon5:179.05:409.711:160.65:587:19Third Quarter30Mon
31Tue6:218.66:429.412:030.312:181.06:007:17Third Quarter31Tue
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