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 4h 16m 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 - Oct 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:4712.15:34-0.86:02-1.25:325:16Waning Gibbous1Mon
2Tue12:1511.612:3412.26:20-0.76:52-1.25:345:14Waning Gibbous2Tue
3Wed1:0611.31:2312.07:09-0.37:45-1.05:355:13Waning Gibbous3Wed
4Thu2:0010.82:1711.78:020.28:43-0.65:365:11Third Quarter4Thu
5Fri2:5910.33:1711.29:000.79:46-0.25:375:09Third Quarter5Fri
6Sat4:049.84:2310.810:061.110:540.25:385:07Third Quarter6Sat
7Sun5:149.55:3410.511:161.35:405:05Third Quarter7Sun
8Mon6:239.56:4310.512:030.312:251.35:415:04Waning Crescent8Mon
9Tue7:279.87:4610.61:080.21:301.05:425:02Waning Crescent9Tue
10Wed8:2310.18:4210.82:060.12:270.65:435:00Waning Crescent10Wed
11Thu9:1210.49:3110.82:570.03:180.35:454:58Waning Crescent11Thu
12Fri9:5610.710:1610.83:430.04:040.05:464:56New Moon12Fri
13Sat10:3510.810:5710.74:240.14:460.05:474:55New Moon13Sat
14Sun11:1210.811:3610.45:020.35:250.05:484:53New Moon14Sun
15Mon11:4710.75:390.66:030.25:504:51Waxing Crescent15Mon
16Tue12:1410.112:2210.56:141.06:400.45:514:50Waxing Crescent16Tue
17Wed12:529.712:5810.36:501.47:180.75:524:48Waxing Crescent17Wed
18Thu1:319.41:3710.07:271.87:591.05:544:46Waxing Crescent18Thu
19Fri2:139.02:199.78:082.18:441.35:554:45Waxing Crescent19Fri
20Sat2:598.73:079.48:552.49:341.55:564:43First Quarter20Sat
21Sun3:518.54:019.39:472.610:281.65:574:41First Quarter21Sun
22Mon4:478.44:599.310:442.511:261.55:594:40First Quarter22Mon
23Tue5:458.65:599.511:442.36:004:38First Quarter23Tue
24Wed6:419.16:569.912:221.212:421.86:014:37Waxing Gibbous24Wed
25Thu7:329.77:4910.41:140.71:361.16:034:35Waxing Gibbous25Thu
26Fri8:1910.48:4010.92:030.22:270.36:044:33Waxing Gibbous26Fri
27Sat9:0411.29:2911.32:50-0.33:15-0.56:054:32Full Moon27Sat
28Sun9:4911.910:1711.63:35-0.64:03-1.26:074:30Full Moon28Sun
29Mon10:3512.411:0611.74:21-0.84:52-1.66:084:29Full Moon29Mon
30Tue11:2112.611:5611.55:08-0.85:42-1.86:094:28Waning Gibbous30Tue
31Wed12:1112.65:57-0.66:34-1.76:114:26Waning Gibbous31Wed
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