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 23m 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 - Feb 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:249.612:3010.46:211.06:460.36:544:43Waxing Crescent1Sat
2Sun12:579.71:0610.26:561.07:190.46:524:45Waxing Crescent2Sun
3Mon1:319.81:4310.07:341.07:540.56:514:46Waxing Crescent3Mon
4Tue2:089.82:249.78:151.08:330.76:504:47Waxing Crescent4Tue
5Wed2:499.93:119.49:001.09:161.06:494:49First Quarter5Wed
6Thu3:359.94:059.09:530.910:071.26:484:50First Quarter6Thu
7Fri4:2810.05:068.810:520.911:061.46:464:52First Quarter7Fri
8Sat5:2910.16:148.811:580.66:454:53Waxing Gibbous8Sat
9Sun6:3410.47:229.112:111.41:050.26:444:54Waxing Gibbous9Sun
10Mon7:3910.98:269.51:181.12:10-0.36:424:56Waxing Gibbous10Mon
11Tue8:4211.49:2410.12:220.63:09-0.96:414:57Waxing Gibbous11Tue
12Wed9:4012.010:1810.73:220.04:05-1.46:404:59Full Moon12Wed
13Thu10:3412.311:1011.24:18-0.64:56-1.86:385:00Full Moon13Thu
14Fri11:2712.411:5911.55:12-0.95:46-1.86:375:01Full Moon14Fri
15Sat12:1812.36:04-1.16:35-1.66:355:03Waning Gibbous15Sat
16Sun12:4811.61:0911.86:56-1.07:23-1.26:345:04Waning Gibbous16Sun
17Mon1:3711.42:0211.17:49-0.78:12-0.56:325:06Waning Gibbous17Mon
18Tue2:2711.12:5510.48:43-0.39:030.26:315:07Third Quarter18Tue
19Wed3:1910.63:539.69:390.29:571.06:295:08Third Quarter19Wed
20Thu4:1410.14:549.010:380.710:551.66:285:10Third Quarter20Thu
21Fri5:139.75:588.511:411.011:562.06:265:11Third Quarter21Fri
22Sat6:149.57:018.412:431.16:245:12Waning Crescent22Sat
23Sun7:159.47:598.512:582.11:421.16:235:14Waning Crescent23Sun
24Mon8:109.68:498.71:551.92:350.96:215:15Waning Crescent24Mon
25Tue8:599.99:339.02:451.63:210.76:195:16Waning Crescent25Tue
26Wed9:4210.110:129.33:301.34:010.46:185:18New Moon26Wed
27Thu10:2110.410:479.64:091.04:370.26:165:19New Moon27Thu
28Fri10:5710.511:209.94:460.85:110.16:145:20New Moon28Fri
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