Tides Today & Tomorrow in Boothbay Harbor, ME

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Boothbay Harbor, ME.
Next low tide : 11:55 pm (0.9 ft)
Next high tide : in 3h 16m at 5:35 pm (9.2 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:16 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8416828
Common Questions About Tides

Boothbay Harbor, ME Tides - May 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:459.51:198.67:020.07:051.05:297:41Waxing Crescent1Sat
2Sun1:199.51:558.57:370.17:421.15:287:42Waxing Crescent2Sun
3Mon1:559.42:338.48:150.28:221.25:267:43Waxing Crescent3Mon
4Tue2:349.33:158.48:570.29:071.25:257:44Waxing Crescent4Tue
5Wed3:199.24:038.49:430.39:571.25:247:46First Quarter5Wed
6Thu4:099.24:548.510:330.310:521.25:227:47First Quarter6Thu
7Fri5:059.15:498.811:270.311:510.95:217:48First Quarter7Fri
8Sat6:069.16:479.112:230.25:207:49First Quarter8Sat
9Sun7:099.27:459.712:540.61:220.05:197:50Waxing Gibbous9Sun
10Mon8:139.48:4210.21:580.12:21-0.25:177:51Waxing Gibbous10Mon
11Tue9:149.79:3610.82:58-0.63:17-0.55:167:52Waxing Gibbous11Tue
12Wed10:1110.010:2911.23:55-1.14:10-0.75:157:54Full Moon12Wed
13Thu11:0710.211:2111.54:50-1.65:03-0.85:147:55Full Moon13Thu
14Fri12:0210.25:43-1.85:56-0.75:137:56Full Moon14Fri
15Sat12:1411.512:5510.16:36-1.86:49-0.55:127:57Waning Gibbous15Sat
16Sun1:0611.31:499.97:29-1.67:41-0.25:117:58Waning Gibbous16Sun
17Mon1:5810.92:439.68:22-1.28:360.25:107:59Waning Gibbous17Mon
18Tue2:5310.43:399.39:16-0.79:330.65:098:00Waning Gibbous18Tue
19Wed3:509.84:379.010:13-0.210:341.05:088:01Third Quarter19Wed
20Thu4:499.35:348.811:090.311:351.25:078:02Third Quarter20Thu
21Fri5:498.86:308.812:050.75:068:03Third Quarter21Fri
22Sat6:488.57:248.812:371.31:011.05:058:04Third Quarter22Sat
23Sun7:478.38:168.91:381.31:551.15:048:05Waning Crescent23Sun
24Mon8:428.29:039.12:341.12:451.25:038:06Waning Crescent24Mon
25Tue9:328.39:469.23:230.83:291.25:038:07Waning Crescent25Tue
26Wed10:178.410:269.44:070.64:101.25:028:08Waning Crescent26Wed
27Thu11:008.411:049.54:480.44:481.25:018:09New Moon27Thu
28Fri11:408.511:419.65:260.25:251.15:018:10New Moon28Fri
29Sat12:198.56:020.16:021.15:008:11New Moon29Sat
30Sun12:189.712:578.66:380.06:391.14:598:12New Moon30Sun
31Mon12:549.71:348.67:15-0.17:191.04:598:13Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8416828)

Common Questions About Boothbay Harbor, ME Tides

Show All
What time does the tide turn (slack tide) in Boothbay Harbor, ME today?

Slack tide in Boothbay Harbor, ME is approximately 8:45 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 neap phase. Tonight's moon is 52% 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 near their weekly minimum.

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 (52% illuminated). This places Boothbay Harbor, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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