Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Castine, ME.
Next low tide (tomorrow) : 9:46 am (0.9 ft)
Next high tide (tomorrow) : in 4h 58m at 3:40 am (10.1 ft)
Sunset today : 7:37 pm
Sunrise tomorrow : 5:40 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - Oct 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:4710.59:0711.12:31-0.12:530.15:325:17Waxing Gibbous1Sun
2Mon9:3510.99:5711.23:21-0.33:44-0.35:335:15Full Moon2Mon
3Tue10:1911.210:4311.14:07-0.34:31-0.55:355:13Full Moon3Tue
4Wed11:0111.311:2710.84:49-0.15:15-0.55:365:11Full Moon4Wed
5Thu11:4011.25:300.25:57-0.35:375:09Waning Gibbous5Thu
6Fri12:0910.412:1910.96:090.76:390.05:385:08Waning Gibbous6Fri
7Sat12:5010.012:5910.66:491.17:210.45:395:06Waning Gibbous7Sat
8Sun1:339.51:4010.27:301.68:050.95:415:04Waning Gibbous8Sun
9Mon2:189.12:269.88:142.08:521.35:425:02Third Quarter9Mon
10Tue3:078.73:169.49:022.49:441.65:435:00Third Quarter10Tue
11Wed4:008.44:119.29:562.610:401.85:444:59Third Quarter11Wed
12Thu4:578.35:109.110:542.611:371.75:464:57Third Quarter12Thu
13Fri5:548.46:089.211:532.45:474:55Third Quarter13Fri
14Sat6:488.87:029.512:311.512:482.05:484:53Waning Crescent14Sat
15Sun7:369.37:519.91:201.21:391.55:494:52Waning Crescent15Sun
16Mon8:199.98:3710.32:040.82:250.85:514:50Waning Crescent16Mon
17Tue9:0010.59:2110.62:460.43:090.25:524:48New Moon17Tue
18Wed9:3911.210:0510.93:260.13:52-0.45:534:47New Moon18Wed
19Thu10:2011.710:4911.04:07-0.14:36-0.95:554:45New Moon19Thu
20Fri11:0212.011:3511.04:49-0.15:21-1.15:564:43New Moon20Fri
21Sat11:4712.15:33-0.16:09-1.25:574:42Waxing Crescent21Sat
22Sun12:2310.812:3512.06:210.27:00-1.05:584:40Waxing Crescent22Sun
23Mon1:1510.51:2811.77:130.57:56-0.66:004:38Waxing Crescent23Mon
24Tue2:1210.12:2711.38:100.98:57-0.26:014:37First Quarter24Tue
25Wed3:159.73:3210.89:151.210:030.26:024:35First Quarter25Wed
26Thu4:229.54:4210.510:251.411:110.46:044:34First Quarter26Thu
27Fri5:319.65:5310.311:371.36:054:32Waxing Gibbous27Fri
28Sat6:369.96:5910.312:160.412:440.96:064:31Waxing Gibbous28Sat
29Sun7:3510.37:5910.41:160.31:450.56:084:29Waxing Gibbous29Sun
30Mon8:2710.78:5310.52:100.22:400.16:094:28Waxing Gibbous30Mon
31Tue9:1311.09:4110.52:590.23:28-0.26:104:26Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8414672)

Common Questions About Castine, ME Tides

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

Slack tide in Castine, ME is approximately 6:43 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 Castine, ME?

Castine, ME is currently in a transitional phase. Tonight's moon is 27% 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 Castine, 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 Castine, ME?

Tide predictions for Castine, 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 Castine, ME?

Tide data for Castine, ME is sourced from NOAA Station #8414672. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8414672.

What is the moon phase in Castine, ME tonight?

Tonight the moon over Castine, ME is Waxing Crescent (27% illuminated). This places Castine, 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