Tides Today & Tomorrow in Islesboro, ME

TIDE TIMES for Saturday, August 15, 2026
The tide is currently falling in Islesboro, ME.
Next low tide : in 3h 52m at 7:51 pm (-0.6 ft)
Next high tide (tomorrow) : 2:03 am (11.4 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:39 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8414888
Common Questions About Tides

Islesboro, ME Tides - May 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:4810.22:249.28:180.58:241.75:267:39Waning Gibbous1Tue
2Wed2:2710.03:069.08:590.79:061.85:257:40Waning Gibbous2Wed
3Thu3:119.93:538.89:450.89:541.95:237:41Third Quarter3Thu
4Fri4:029.84:488.910:370.910:511.95:227:42Third Quarter4Fri
5Sat4:599.85:489.111:360.811:551.75:217:43Third Quarter5Sat
6Sun6:039.96:519.512:370.65:197:44Third Quarter6Sun
7Mon7:0910.27:5210.21:011.21:370.25:187:46Waning Crescent7Mon
8Tue8:1510.68:5110.92:050.52:34-0.25:177:47Waning Crescent8Tue
9Wed9:1811.09:4511.73:05-0.33:29-0.65:157:48Waning Crescent9Wed
10Thu10:1611.410:3812.44:03-1.14:22-0.95:147:49New Moon10Thu
11Fri11:1111.711:2812.84:57-1.75:14-1.15:137:50New Moon11Fri
12Sat12:0411.75:51-2.16:06-1.05:127:51New Moon12Sat
13Sun12:1912.912:5811.56:44-2.26:58-0.85:107:53Waxing Crescent13Sun
14Mon1:1112.71:5311.27:37-1.97:51-0.35:097:54Waxing Crescent14Mon
15Tue2:0412.22:4910.78:32-1.58:460.25:087:55Waxing Crescent15Tue
16Wed3:0011.63:4610.29:27-0.99:430.85:077:56Waxing Crescent16Wed
17Thu3:5810.94:479.810:25-0.210:441.35:067:57First Quarter17Thu
18Fri5:0010.35:479.511:250.311:481.65:057:58First Quarter18Fri
19Sat6:029.86:469.312:240.85:047:59First Quarter19Sat
20Sun7:029.57:409.312:501.71:201.05:038:00First Quarter20Sun
21Mon7:589.38:299.51:481.62:111.15:028:01Waxing Gibbous21Mon
22Tue8:509.39:159.72:391.42:581.25:018:02Waxing Gibbous22Tue
23Wed9:389.39:569.93:261.13:401.25:008:03Waxing Gibbous23Wed
24Thu10:219.410:3310.14:090.84:191.25:008:04Waxing Gibbous24Thu
25Fri11:019.511:0810.34:490.54:551.24:598:05Full Moon25Fri
26Sat11:389.511:4010.45:260.35:311.24:588:06Full Moon26Sat
27Sun12:149.56:030.26:061.24:578:07Full Moon27Sun
28Mon12:1210.512:499.56:400.16:421.34:578:08Full Moon28Mon
29Tue12:4710.51:269.47:180.17:201.44:568:09Waning Gibbous29Tue
30Wed1:2410.52:059.37:580.18:021.54:558:10Waning Gibbous30Wed
31Thu2:0610.42:489.38:400.28:471.54:558:11Waning Gibbous31Thu
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 10:57 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 Islesboro, ME?

Islesboro, ME is currently in a spring phase. Tonight's moon is 11% 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 maximum.

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 Waxing Crescent (11% illuminated). This places Islesboro, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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