Tides Today & Tomorrow in Islesboro, ME

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Islesboro, ME.
Next low tide (tomorrow) : 9:01 am (0.0 ft)
Next high tide (tomorrow) : in 4h 16m at 2:53 am (10.7 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 5:40 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8414888
Common Questions About Tides

Islesboro, ME Tides - Jan 1943

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:249.96:529.312:101.112:501.18:115:06Waning Crescent1Fri
2Sat7:2110.47:559.61:061.01:500.58:115:07Waning Crescent2Sat
3Sun8:1811.08:5710.02:030.62:49-0.28:115:08Waning Crescent3Sun
4Mon9:1611.79:5710.53:000.23:46-0.98:115:09Waning Crescent4Mon
5Tue10:1312.310:5411.03:57-0.24:42-1.58:115:10New Moon5Tue
6Wed11:0812.711:4911.34:52-0.65:36-2.08:115:11New Moon6Wed
7Thu12:0213.05:48-0.96:30-2.28:115:12New Moon7Thu
8Fri12:4311.612:5712.96:43-1.07:23-2.28:115:13Waxing Crescent8Fri
9Sat1:3811.61:5312.67:40-0.98:17-1.98:105:14Waxing Crescent9Sat
10Sun2:3411.62:5012.18:37-0.79:11-1.58:105:15Waxing Crescent10Sun
11Mon3:3011.33:4911.49:35-0.410:07-0.98:105:17First Quarter11Mon
12Tue4:2811.04:5010.710:360.011:04-0.28:095:18First Quarter12Tue
13Wed5:2710.85:5310.111:400.48:095:19First Quarter13Wed
14Thu6:2610.56:569.612:040.312:440.68:095:20First Quarter14Thu
15Fri7:2410.47:559.31:020.81:440.78:085:21Waxing Gibbous15Fri
16Sat8:1810.38:529.21:581.12:400.78:085:23Waxing Gibbous16Sat
17Sun9:1010.39:449.22:511.33:310.68:075:24Waxing Gibbous17Sun
18Mon9:5710.310:319.33:401.34:180.58:065:25Waxing Gibbous18Mon
19Tue10:4010.411:139.44:241.35:010.38:065:26Full Moon19Tue
20Wed11:1910.511:529.55:051.35:400.28:055:28Full Moon20Wed
21Thu11:5610.55:431.26:170.28:045:29Full Moon21Thu
22Fri12:299.512:3010.56:201.26:520.28:045:30Full Moon22Fri
23Sat1:039.51:0210.46:561.17:270.28:035:32Waning Gibbous23Sat
24Sun1:359.51:3510.37:321.28:000.48:025:33Waning Gibbous24Sun
25Mon2:079.62:1110.18:091.28:350.58:015:34Waning Gibbous25Mon
26Tue2:419.62:499.98:481.29:120.78:005:36Waning Gibbous26Tue
27Wed3:199.73:339.79:311.29:530.87:595:37Third Quarter27Wed
28Thu4:039.84:229.510:201.210:401.07:585:38Third Quarter28Thu
29Fri4:529.95:189.311:161.111:331.07:575:40Third Quarter29Fri
30Sat5:4710.26:219.312:170.87:565:41Third Quarter30Sat
31Sun6:4810.57:289.512:331.01:220.47:555:42Waning Crescent31Sun
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 5:57 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 spring phase. Tonight's moon is 18% 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 (18% 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