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 : 10:19 pm (0.7 ft)
Next high tide : in 2h 31m at 4:01 pm (9.3 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 - May 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:388.36:277.812:001.25:307:40First Quarter1Fri
2Sat6:358.27:218.012:182.012:541.25:297:41First Quarter2Sat
3Sun7:338.38:128.31:161.81:471.15:277:42Waxing Gibbous3Sun
4Mon8:278.58:588.82:121.42:370.85:267:44Waxing Gibbous4Mon
5Tue9:178.89:409.33:020.93:210.55:257:45Waxing Gibbous5Tue
6Wed10:039.210:219.83:490.34:040.25:237:46Waxing Gibbous6Wed
7Thu10:489.511:0310.34:33-0.34:46-0.15:227:47Full Moon7Thu
8Fri11:349.711:4610.75:18-0.85:30-0.35:217:48Full Moon8Fri
9Sat12:219.86:04-1.26:16-0.45:197:49Full Moon9Sat
10Sun12:3111.01:099.86:51-1.47:04-0.35:187:51Waning Gibbous10Sun
11Mon1:1811.02:009.77:41-1.47:54-0.25:177:52Waning Gibbous11Mon
12Tue2:0910.92:549.58:33-1.28:480.15:167:53Waning Gibbous12Tue
13Wed3:0410.63:549.39:30-0.99:480.45:157:54Third Quarter13Wed
14Thu4:0610.24:589.210:31-0.610:520.65:137:55Third Quarter14Thu
15Fri5:119.86:029.111:34-0.35:127:56Third Quarter15Fri
16Sat6:199.57:069.212:000.812:39-0.15:117:57Third Quarter16Sat
17Sun7:279.38:089.41:100.71:430.15:107:58Waning Crescent17Sun
18Mon8:319.39:039.72:170.52:420.15:097:59Waning Crescent18Mon
19Tue9:299.39:539.93:160.13:340.25:088:00Waning Crescent19Tue
20Wed10:219.310:3910.04:08-0.14:220.35:078:01Waning Crescent20Wed
21Thu11:109.211:2110.14:56-0.35:050.45:068:03New Moon21Thu
22Fri11:559.15:40-0.45:460.65:068:04New Moon22Fri
23Sat12:0110.012:379.06:22-0.36:260.85:058:05New Moon23Sat
24Sun12:409.91:178.87:01-0.27:041.05:048:06New Moon24Sun
25Mon1:179.71:578.67:390.07:421.35:038:06Waxing Crescent25Mon
26Tue1:559.42:378.48:180.28:221.55:028:07Waxing Crescent26Tue
27Wed2:359.23:208.28:580.49:051.75:028:08Waxing Crescent27Wed
28Thu3:188.94:068.19:410.79:521.85:018:09Waxing Crescent28Thu
29Fri4:058.74:538.110:270.810:421.95:008:10First Quarter29Fri
30Sat4:558.55:418.211:140.911:341.85:008:11First Quarter30Sat
31Sun5:478.46:308.412:021.04:598:12First Quarter31Sun
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 7:10 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 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