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 11m at 11:15 pm (1.2 ft)
Next high tide (tomorrow) : 5:28 am (8.9 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 - Sep 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:4010.19:5711.73:25-0.43:400.45:577:12Waning Crescent1Sun
2Mon10:3610.610:5312.04:22-0.84:370.05:587:11New Moon2Mon
3Tue11:2811.011:4612.15:15-1.15:31-0.45:597:09New Moon3Tue
4Wed12:1711.36:04-1.16:23-0.66:007:07New Moon4Wed
5Thu12:3611.91:0411.46:51-0.97:12-0.56:027:05Waxing Crescent5Thu
6Fri1:2511.61:4911.37:37-0.58:01-0.36:037:03Waxing Crescent6Fri
7Sat2:1311.02:3511.08:230.08:500.16:047:01Waxing Crescent7Sat
8Sun3:0210.43:2210.69:090.69:410.56:057:00Waxing Crescent8Sun
9Mon3:539.74:1010.29:571.310:330.96:066:58First Quarter9Mon
10Tue4:479.15:039.810:481.911:291.36:076:56First Quarter10Tue
11Wed5:458.75:599.511:432.36:096:54First Quarter11Wed
12Thu6:458.46:589.412:281.512:422.46:106:52First Quarter12Thu
13Fri7:448.47:569.41:271.61:412.46:116:50Waxing Gibbous13Fri
14Sat8:388.68:499.72:221.42:352.16:126:48Waxing Gibbous14Sat
15Sun9:278.99:3710.03:121.13:241.86:136:47Waxing Gibbous15Sun
16Mon10:099.310:2010.43:570.84:081.46:146:45Waxing Gibbous16Mon
17Tue10:489.810:5910.64:360.54:481.06:166:43Full Moon17Tue
18Wed11:2410.211:3710.85:130.25:260.66:176:41Full Moon18Wed
19Thu11:5910.55:480.16:030.36:186:39Full Moon19Thu
20Fri12:1410.912:3410.96:230.06:420.06:196:37Full Moon20Fri
21Sat12:5310.91:1111.16:590.07:22-0.16:206:35Waning Gibbous21Sat
22Sun1:3410.81:5011.27:380.28:06-0.26:216:33Waning Gibbous22Sun
23Mon2:1810.52:3411.28:200.48:54-0.16:236:32Waning Gibbous23Mon
24Tue3:0710.23:2411.19:070.79:480.16:246:30Third Quarter24Tue
25Wed4:029.84:2010.810:021.110:480.36:256:28Third Quarter25Wed
26Thu5:059.45:2410.611:041.411:550.46:266:26Third Quarter26Thu
27Fri6:149.36:3410.512:131.56:276:24Third Quarter27Fri
28Sat7:249.47:4410.71:050.41:251.36:296:22Waning Crescent28Sat
29Sun7:309.87:5011.01:120.11:320.85:305:20Waning Crescent29Sun
30Mon8:2910.38:4811.32:13-0.22:330.35:315:19Waning Crescent30Mon
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 2:21 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 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