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 1h 10m 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 - Feb 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:0511.29:459.92:470.93:32-0.76:544:43Full Moon1Sun
2Mon9:5711.810:3510.53:400.34:22-1.26:534:44Full Moon2Mon
3Tue10:4812.211:2411.04:32-0.35:11-1.66:524:46Full Moon3Tue
4Wed11:3912.45:24-0.75:59-1.86:504:47Waning Gibbous4Wed
5Thu12:1211.412:3012.36:16-1.06:48-1.76:494:48Waning Gibbous5Thu
6Fri1:0211.61:2211.97:09-1.07:37-1.36:484:50Waning Gibbous6Fri
7Sat1:5211.52:1711.38:04-0.88:28-0.86:474:51Waning Gibbous7Sat
8Sun2:4511.33:1410.69:01-0.59:23-0.16:454:53Third Quarter8Sun
9Mon3:4111.04:169.810:02-0.110:210.66:444:54Third Quarter9Mon
10Tue4:4110.65:239.211:070.311:241.26:434:55Third Quarter10Tue
11Wed5:4410.26:318.912:140.56:414:57Waning Crescent11Wed
12Thu6:4910.07:378.812:301.51:190.56:404:58Waning Crescent12Thu
13Fri7:5110.18:358.91:341.62:190.56:385:00Waning Crescent13Fri
14Sat8:4710.29:269.12:311.43:110.36:375:01Waning Crescent14Sat
15Sun9:3510.410:099.33:221.23:570.26:365:02New Moon15Sun
16Mon10:1810.510:489.54:061.04:380.16:345:04New Moon16Mon
17Tue10:5710.511:249.74:460.85:140.16:335:05New Moon17Tue
18Wed11:3310.511:579.85:230.85:480.26:315:07New Moon18Wed
19Thu12:0810.45:590.76:200.36:295:08Waxing Crescent19Thu
20Fri12:299.912:4210.16:330.86:510.56:285:09Waxing Crescent20Fri
21Sat1:029.91:179.87:080.87:230.86:265:11Waxing Crescent21Sat
22Sun1:359.91:549.57:440.97:571.16:255:12Waxing Crescent22Sun
23Mon2:119.82:349.18:241.08:351.46:235:13Waxing Crescent23Mon
24Tue2:519.73:208.79:091.29:191.76:215:15First Quarter24Tue
25Wed3:379.64:148.410:001.310:111.96:205:16First Quarter25Wed
26Thu4:329.55:168.311:001.211:122.06:185:17First Quarter26Thu
27Fri5:359.66:248.412:061.06:175:19Waxing Gibbous27Fri
28Sat6:4110.07:298.912:191.81:120.66:155:20Waxing Gibbous28Sat
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