Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Castine, ME.
Next low tide : in 1h 36m at 11:28 am (2.0 ft)
Next high tide : 5:45 pm (9.7 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - May 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:4710.110:1010.33:350.83:560.65:257:38Waxing Gibbous1Tue
2Wed10:3310.110:5010.54:210.54:380.75:247:39Waxing Gibbous2Wed
3Thu11:1410.111:2610.65:030.35:160.85:227:41Full Moon3Thu
4Fri11:5310.05:420.25:520.95:217:42Full Moon4Fri
5Sat12:0010.612:299.96:180.26:261.25:197:43Full Moon5Sat
6Sun12:3410.61:059.76:530.27:001.45:187:44Full Moon6Sun
7Mon1:0810.51:419.57:280.47:351.65:177:45Waning Gibbous7Mon
8Tue1:4310.32:199.38:050.58:121.95:167:47Waning Gibbous8Tue
9Wed2:2110.22:599.18:440.78:522.05:147:48Waning Gibbous9Wed
10Thu3:0210.03:439.09:260.99:372.15:137:49Waning Gibbous10Thu
11Fri3:489.94:329.010:141.010:282.15:127:50Third Quarter11Fri
12Sat4:419.85:259.111:061.011:252.05:117:51Third Quarter12Sat
13Sun5:389.86:229.412:010.85:097:52Third Quarter13Sun
14Mon6:399.97:199.912:251.612:580.65:087:54Third Quarter14Mon
15Tue7:4010.28:1410.51:261.11:540.35:077:55Waning Crescent15Tue
16Wed8:3910.69:0611.32:250.32:48-0.15:067:56Waning Crescent16Wed
17Thu9:3511.09:5711.93:22-0.53:41-0.45:057:57Waning Crescent17Thu
18Fri10:3011.310:4812.54:16-1.24:32-0.65:047:58New Moon18Fri
19Sat11:2311.511:3812.85:09-1.75:23-0.65:037:59New Moon19Sat
20Sun12:1611.56:01-1.96:15-0.55:028:00New Moon20Sun
21Mon12:2912.81:1011.36:54-1.97:09-0.25:018:01Waxing Crescent21Mon
22Tue1:2212.52:0511.07:49-1.68:040.25:008:02Waxing Crescent22Tue
23Wed2:1712.13:0310.68:45-1.19:020.64:598:03Waxing Crescent23Wed
24Thu3:1511.54:0210.29:43-0.610:041.04:598:04First Quarter24Thu
25Fri4:1610.95:049.910:430.011:071.34:588:05First Quarter25Fri
26Sat5:2010.36:069.811:440.44:578:06First Quarter26Sat
27Sun6:249.97:059.712:121.512:430.74:568:07First Quarter27Sun
28Mon7:269.78:009.91:141.41:401.04:568:08Waxing Gibbous28Mon
29Tue8:249.68:5010.02:121.22:321.14:558:09Waxing Gibbous29Tue
30Wed9:169.59:3510.23:041.03:191.24:548:10Waxing Gibbous30Wed
31Thu10:039.610:1510.43:520.74:021.34:548:11Waxing Gibbous31Thu
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 2:36 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 neap phase. Tonight's moon is 55% 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 minimum.

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 (55% illuminated). This places Castine, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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