Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Castine, ME.
Next low tide : in 3h 20m at 10:35 am (1.5 ft)
Next high tide : 4:51 pm (10.0 ft)
Sunset today : 7:34 pm
Sunrise tomorrow : 5:43 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - May 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:5511.411:1212.34:41-1.34:59-0.75:267:37Full Moon1Fri
2Sat11:4611.45:32-1.65:47-0.65:257:39Full Moon2Sat
3Sun12:0012.412:3711.26:22-1.76:36-0.25:237:40Full Moon3Sun
4Mon12:4812.21:2710.97:12-1.47:250.35:227:41Waning Gibbous4Mon
5Tue1:3611.82:1810.48:02-1.08:160.85:207:42Waning Gibbous5Tue
6Wed2:2711.33:109.98:54-0.49:081.35:197:43Waning Gibbous6Wed
7Thu3:1910.64:059.49:470.310:041.85:187:45Third Quarter7Thu
8Fri4:1610.15:039.010:430.811:032.15:167:46Third Quarter8Fri
9Sat5:159.66:018.911:411.25:157:47Third Quarter9Sat
10Sun6:169.36:588.912:042.212:381.55:147:48Third Quarter10Sun
11Mon7:159.17:519.11:032.11:321.55:137:49Waning Crescent11Mon
12Tue8:109.18:399.41:591.92:211.55:117:50Waning Crescent12Tue
13Wed9:019.29:229.72:501.53:061.45:107:52Waning Crescent13Wed
14Thu9:469.410:0110.13:361.23:471.45:097:53Waning Crescent14Thu
15Fri10:289.510:3810.44:180.84:261.35:087:54Waning Crescent15Fri
16Sat11:089.611:1310.64:570.55:031.45:077:55New Moon16Sat
17Sun11:479.611:4910.85:350.25:391.45:067:56New Moon17Sun
18Mon12:259.76:120.16:161.45:057:57New Moon18Mon
19Tue12:2710.91:059.76:510.06:561.55:047:58Waxing Crescent19Tue
20Wed1:0710.91:479.67:330.07:391.55:037:59Waxing Crescent20Wed
21Thu1:5110.92:339.68:180.08:261.55:028:00Waxing Crescent21Thu
22Fri2:3910.83:249.69:070.19:191.55:018:01Waxing Crescent22Fri
23Sat3:3310.74:199.610:010.210:181.55:008:02First Quarter23Sat
24Sun4:3210.55:189.810:580.211:211.34:598:03First Quarter24Sun
25Mon5:3510.46:1810.111:570.24:588:04First Quarter25Mon
26Tue6:4010.37:1810.612:270.912:560.24:588:05Waxing Gibbous26Tue
27Wed7:4410.48:1511.11:310.51:550.14:578:06Waxing Gibbous27Wed
28Thu8:4610.59:0911.62:33-0.12:510.14:568:07Waxing Gibbous28Thu
29Fri9:4410.610:0111.93:31-0.63:450.04:558:08Waxing Gibbous29Fri
30Sat10:3910.710:5112.14:25-1.04:370.14:558:09Full Moon30Sat
31Sun11:3110.711:4012.05:16-1.25:270.34:548:10Full Moon31Sun
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 1:43 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 46% 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 (46% 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