Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Castine, ME.
Next low tide : 12:24 pm (2.3 ft)
Next high tide : in 4h 51m at 6:27 am (8.5 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 5:45 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - Jan 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:4210.59:179.42:271.33:050.27:114:05Waning Crescent1Sat
2Sun9:2610.910:029.83:111.03:49-0.37:114:06New Moon2Sun
3Mon10:0911.410:4610.13:560.74:33-0.77:114:07New Moon3Mon
4Tue10:5411.711:3110.44:400.45:18-1.07:114:08New Moon4Tue
5Wed11:4011.95:270.26:04-1.27:114:09Waxing Crescent5Wed
6Thu12:1810.612:2912.06:150.16:52-1.37:114:10Waxing Crescent6Thu
7Fri1:0610.71:2011.87:060.07:42-1.17:114:11Waxing Crescent7Fri
8Sat1:5810.72:1411.58:010.08:35-0.97:104:12Waxing Crescent8Sat
9Sun2:5210.73:1211.08:590.19:31-0.57:104:13First Quarter9Sun
10Mon3:5010.74:1510.510:020.210:29-0.17:104:14First Quarter10Mon
11Tue4:5010.75:2010.111:070.211:310.27:104:16First Quarter11Tue
12Wed5:5210.76:279.812:140.17:094:17Waxing Gibbous12Wed
13Thu6:5310.87:329.712:330.41:18-0.17:094:18Waxing Gibbous13Thu
14Fri7:5211.08:319.81:330.52:17-0.47:084:19Waxing Gibbous14Fri
15Sat8:4711.19:269.92:300.53:12-0.67:084:20Waxing Gibbous15Sat
16Sun9:3711.210:1510.03:230.54:01-0.77:074:21Full Moon16Sun
17Mon10:2411.211:0010.04:110.54:47-0.67:074:23Full Moon17Mon
18Tue11:0811.211:429.94:560.65:30-0.57:064:24Full Moon18Tue
19Wed11:4911.05:390.76:11-0.37:064:25Full Moon19Wed
20Thu12:229.912:3010.76:200.86:500.07:054:27Waning Gibbous20Thu
21Fri1:019.71:0910.47:001.07:280.37:044:28Waning Gibbous21Fri
22Sat1:409.61:5010.07:411.28:070.67:034:29Waning Gibbous22Sat
23Sun2:209.52:329.68:231.48:461.07:034:31Waning Gibbous23Sun
24Mon3:019.33:179.29:081.69:281.37:024:32Third Quarter24Mon
25Tue3:459.24:068.89:561.710:141.67:014:33Third Quarter25Tue
26Wed4:339.25:008.510:491.711:041.87:004:35Third Quarter26Wed
27Thu5:259.35:588.411:461.611:581.86:594:36Third Quarter27Thu
28Fri6:199.56:578.512:431.36:584:37Waning Crescent28Fri
29Sat7:139.87:538.812:531.71:390.86:574:39Waning Crescent29Sat
30Sun8:0610.38:459.31:481.42:320.26:564:40Waning Crescent30Sun
31Mon8:5710.99:359.82:401.03:22-0.46:554:41New Moon31Mon
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 9:25 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 65% 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 First Quarter (65% 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