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 40m 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 - Mar 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:2310.47:119.212:031.212:530.26:125:22Waxing Gibbous1Thu
2Fri7:3010.48:159.41:121.11:580.06:105:24Waxing Gibbous2Fri
3Sat8:3210.79:119.72:150.92:56-0.26:085:25Waxing Gibbous3Sat
4Sun9:2610.910:0010.03:110.63:47-0.46:075:26Full Moon4Sun
5Mon10:1511.010:4410.34:010.34:32-0.56:055:28Full Moon5Mon
6Tue10:5911.011:2410.44:460.15:14-0.46:035:29Full Moon6Tue
7Wed11:3910.95:280.15:52-0.26:015:30Full Moon7Wed
8Thu12:0110.412:1810.66:080.16:280.16:005:32Waning Gibbous8Thu
9Fri12:3710.312:5610.36:460.37:030.55:585:33Waning Gibbous9Fri
10Sat1:1310.21:349.97:240.57:390.95:565:34Waning Gibbous10Sat
11Sun1:4910.02:149.48:030.88:161.35:545:35Waning Gibbous11Sun
12Mon2:289.72:578.98:451.18:571.75:525:37Third Quarter12Mon
13Tue3:119.53:458.59:311.39:442.15:515:38Third Quarter13Tue
14Wed3:599.24:408.210:241.510:372.35:495:39Third Quarter14Wed
15Thu4:559.15:408.111:221.611:372.45:475:40Third Quarter15Thu
16Fri5:559.26:418.312:231.45:455:42Waning Crescent16Fri
17Sat6:559.57:388.712:382.11:211.05:435:43Waning Crescent17Sat
18Sun7:5110.08:299.31:351.62:140.55:415:44Waning Crescent18Sun
19Mon8:4310.69:1610.12:281.03:02-0.15:405:45Waning Crescent19Mon
20Tue9:3211.210:0010.83:170.23:48-0.75:385:47New Moon20Tue
21Wed10:1911.710:4411.44:05-0.54:32-1.15:365:48New Moon21Wed
22Thu11:0512.011:2811.94:52-1.15:16-1.35:345:49New Moon22Thu
23Fri11:5312.05:39-1.56:01-1.35:325:50Waxing Crescent23Fri
24Sat12:1412.212:4311.86:28-1.66:49-1.05:305:52Waxing Crescent24Sat
25Sun1:0212.11:3511.37:20-1.57:39-0.55:285:53Waxing Crescent25Sun
26Mon1:5311.92:3010.78:15-1.18:330.15:275:54Waxing Crescent26Mon
27Tue2:4911.43:3210.09:14-0.69:340.75:255:55First Quarter27Tue
28Wed3:5010.84:399.510:20-0.110:411.25:235:57First Quarter28Wed
29Thu4:5810.45:499.211:290.311:521.45:215:58First Quarter29Thu
30Fri6:1010.16:589.312:380.45:195:59Waxing Gibbous30Fri
31Sat7:1810.18:009.51:011.31:410.35:176:00Waxing Gibbous31Sat
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