Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Castine, ME.
Next low tide : in 46m at 12:24 pm (2.3 ft)
Next high tide : 6:42 pm (9.5 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 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:119.712:1610.76:071.16:380.17:114:06Waning Gibbous1Fri
2Sat12:499.612:5410.46:451.37:150.47:114:06Waning Gibbous2Sat
3Sun1:279.41:3310.17:231.57:530.67:114:07Waning Gibbous3Sun
4Mon2:069.32:139.88:041.68:320.87:114:08Waning Gibbous4Mon
5Tue2:479.32:579.58:481.79:141.07:114:09Third Quarter5Tue
6Wed3:319.23:459.39:361.89:591.27:114:10Third Quarter6Wed
7Thu4:199.34:389.010:281.710:481.37:114:11Third Quarter7Thu
8Fri5:109.55:359.011:241.411:411.37:104:12Third Quarter8Fri
9Sat6:039.86:359.112:221.07:104:14Waning Crescent9Sat
10Sun6:5810.37:339.412:371.11:200.57:104:15Waning Crescent10Sun
11Mon7:5210.88:309.81:320.82:16-0.27:094:16Waning Crescent11Mon
12Tue8:4511.59:2310.32:270.43:09-0.97:094:17New Moon12Tue
13Wed9:3712.010:1610.73:210.04:02-1.47:094:18New Moon13Wed
14Thu10:2912.411:0711.14:13-0.44:53-1.87:084:19New Moon14Thu
15Fri11:2112.711:5911.35:06-0.65:45-2.07:084:21New Moon15Fri
16Sat12:1412.66:00-0.86:37-2.07:074:22Waxing Crescent16Sat
17Sun12:5111.41:0812.36:54-0.77:30-1.77:074:23Waxing Crescent17Sun
18Mon1:4511.32:0511.87:51-0.68:24-1.27:064:24Waxing Crescent18Mon
19Tue2:4111.13:0311.28:50-0.39:20-0.77:054:26First Quarter19Tue
20Wed3:3910.94:0510.59:520.010:19-0.17:054:27First Quarter20Wed
21Thu4:3910.65:109.910:560.211:190.47:044:28First Quarter21Thu
22Fri5:4010.46:159.512:010.47:034:30First Quarter22Fri
23Sat6:4010.47:189.412:200.81:030.37:024:31Waxing Gibbous23Sat
24Sun7:3810.48:169.31:191.02:010.27:024:32Waxing Gibbous24Sun
25Mon8:3010.59:079.42:141.02:540.17:014:34Waxing Gibbous25Mon
26Tue9:1810.69:539.53:041.03:400.07:004:35Waxing Gibbous26Tue
27Wed10:0110.710:349.63:490.94:23-0.16:594:36Full Moon27Wed
28Thu10:4110.711:129.74:300.95:01-0.16:584:38Full Moon28Thu
29Fri11:1810.711:479.75:080.95:380.06:574:39Full Moon29Fri
30Sat11:5410.65:450.96:120.16:564:40Full Moon30Sat
31Sun12:229.712:2910.56:200.96:460.26:554:42Waning Gibbous31Sun
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 3:33 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 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