Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Castine, ME.
Next low tide (tomorrow) : in 2h 02m at 1:11 am (1.6 ft)
Next high tide (tomorrow) : 7:27 am (8.4 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 - Oct 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:1812.06:05-0.66:33-1.05:325:16Waxing Crescent1Wed
2Thu12:4611.41:0512.06:51-0.47:23-0.95:345:14Waxing Crescent2Thu
3Fri1:3711.11:5711.87:42-0.18:18-0.75:355:13Waxing Crescent3Fri
4Sat2:3310.72:5311.48:380.39:18-0.45:365:11First Quarter4Sat
5Sun3:3510.33:5611.19:390.610:23-0.15:375:09First Quarter5Sun
6Mon4:4110.05:0410.810:460.911:300.05:385:07First Quarter6Mon
7Tue5:509.96:1310.811:560.95:405:05Waxing Gibbous7Tue
8Wed6:5610.17:1810.912:370.01:020.65:415:04Waxing Gibbous8Wed
9Thu7:5610.48:1711.01:38-0.22:030.25:425:02Waxing Gibbous9Thu
10Fri8:4910.89:1111.22:33-0.42:58-0.15:435:00Waxing Gibbous10Fri
11Sat9:3711.19:5911.23:23-0.43:47-0.45:454:58Full Moon11Sat
12Sun10:2111.210:4411.14:09-0.44:33-0.55:464:57Full Moon12Sun
13Mon11:0211.211:2610.94:51-0.25:15-0.45:474:55Full Moon13Mon
14Tue11:4111.15:320.15:56-0.25:484:53Full Moon14Tue
15Wed12:0710.612:1910.96:100.56:360.15:504:51Waning Gibbous15Wed
16Thu12:4710.212:5810.66:490.97:170.45:514:50Waning Gibbous16Thu
17Fri1:289.81:3810.37:291.37:580.75:524:48Waning Gibbous17Fri
18Sat2:119.42:219.98:111.78:431.15:534:46Waning Gibbous18Sat
19Sun2:589.13:089.68:572.09:321.35:554:45Third Quarter19Sun
20Mon3:488.84:009.49:482.210:241.55:564:43Third Quarter20Mon
21Tue4:428.74:569.310:432.311:191.55:574:41Third Quarter21Tue
22Wed5:388.85:549.411:402.15:594:40Third Quarter22Wed
23Thu6:329.16:499.712:141.312:361.76:004:38Waning Crescent23Thu
24Fri7:239.67:4110.11:050.91:281.26:014:37Waning Crescent24Fri
25Sat8:0910.28:3010.61:540.52:170.56:034:35Waning Crescent25Sat
26Sun8:5410.99:1711.02:390.03:04-0.26:044:34New Moon26Sun
27Mon9:3711.610:0311.43:24-0.43:50-0.86:054:32New Moon27Mon
28Tue10:2112.110:5011.64:08-0.74:36-1.36:074:31New Moon28Tue
29Wed11:0712.411:3811.64:53-0.85:24-1.66:084:29New Moon29Wed
30Thu11:5412.55:41-0.76:14-1.66:094:28Waxing Crescent30Thu
31Fri12:2911.512:4512.46:31-0.57:07-1.56:114:26Waxing Crescent31Fri
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 4:19 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