Tides Today & Tomorrow in Islesboro, ME

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Islesboro, ME.
Next low tide (tomorrow) : in 2h 02m at 12:00 am (1.0 ft)
Next high tide (tomorrow) : 6:12 am (9.0 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:11 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8414888
Common Questions About Tides

Islesboro, ME Tides - Jan 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:2511.310:039.83:080.73:50-0.47:114:06New Moon1Sun
2Mon10:1211.210:509.83:560.84:36-0.47:114:07New Moon2Mon
3Tue10:5511.111:339.74:410.95:20-0.37:114:08New Moon3Tue
4Wed11:3710.95:241.16:02-0.17:114:09New Moon4Wed
5Thu12:159.512:1610.66:051.36:430.17:114:10Waxing Crescent5Thu
6Fri12:569.312:5510.36:461.57:210.47:114:11Waxing Crescent6Fri
7Sat1:349.11:329.97:251.77:590.87:114:12Waxing Crescent7Sat
8Sun2:129.02:119.58:061.88:361.17:104:13Waxing Crescent8Sun
9Mon2:508.92:529.28:492.09:151.47:104:14First Quarter9Mon
10Tue3:298.93:378.89:362.19:581.77:104:15First Quarter10Tue
11Wed4:128.94:288.610:282.110:441.87:104:17First Quarter11Wed
12Thu4:599.15:248.511:231.911:341.97:094:18First Quarter12Thu
13Fri5:489.46:228.512:191.57:094:19Waxing Gibbous13Fri
14Sat6:409.87:218.712:261.81:151.07:084:20Waxing Gibbous14Sat
15Sun7:3310.38:189.11:191.62:090.57:084:21Waxing Gibbous15Sun
16Mon8:2710.99:129.62:121.23:01-0.27:074:22Waxing Gibbous16Mon
17Tue9:2011.510:0410.13:050.83:52-0.87:074:24Full Moon17Tue
18Wed10:1212.010:5410.53:570.34:43-1.37:064:25Full Moon18Wed
19Thu11:0312.411:4510.94:50-0.15:33-1.67:064:26Full Moon19Thu
20Fri11:5612.55:43-0.46:24-1.77:054:28Waning Gibbous20Fri
21Sat12:3611.212:4912.36:37-0.67:15-1.67:044:29Waning Gibbous21Sat
22Sun1:2911.31:4511.97:33-0.68:07-1.37:034:30Waning Gibbous22Sun
23Mon2:2311.32:4311.48:31-0.49:00-0.87:034:32Third Quarter23Mon
24Tue3:1911.23:4410.79:32-0.29:57-0.27:024:33Third Quarter24Tue
25Wed4:1911.04:5010.110:370.110:570.47:014:34Third Quarter25Wed
26Thu5:2010.95:569.611:430.211:590.87:004:36Third Quarter26Thu
27Fri6:2110.77:019.412:470.36:594:37Waning Crescent27Fri
28Sat7:2110.68:029.31:001.11:480.36:584:38Waning Crescent28Sat
29Sun8:1710.68:579.31:581.22:430.26:574:40Waning Crescent29Sun
30Mon9:0910.79:479.42:521.33:340.16:564:41Waning Crescent30Mon
31Tue9:5610.710:329.53:411.24:200.16:554:42New Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8414888)

Common Questions About Islesboro, ME Tides

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What time does the tide turn (slack tide) in Islesboro, ME today?

Slack tide in Islesboro, ME is approximately 3:06 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 Islesboro, ME?

Islesboro, 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 Islesboro, 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 Islesboro, ME?

Tide predictions for Islesboro, 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 Islesboro, ME?

Tide data for Islesboro, ME is sourced from NOAA Station #8414888. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8414888.

What is the moon phase in Islesboro, ME tonight?

Tonight the moon over Islesboro, ME is First Quarter (52% illuminated). This places Islesboro, 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