Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Castine, ME.
Next low tide : 9:29 pm (0.4 ft)
Next high tide : in 2h 45m at 3:13 pm (10.8 ft)
Sunset today : 7:37 pm
Sunrise tomorrow : 5:40 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - Sep 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:399.15:5710.011:391.85:577:13Third Quarter1Sat
2Sun6:428.86:599.712:261.112:402.15:587:11Third Quarter2Sun
3Mon7:438.67:589.71:271.31:402.15:597:09Waning Crescent3Mon
4Tue8:398.88:539.92:241.22:361.96:007:07Waning Crescent4Tue
5Wed9:299.09:4110.13:151.03:261.76:017:06Waning Crescent5Wed
6Thu10:129.310:2310.34:000.84:111.46:037:04Waning Crescent6Thu
7Fri10:519.711:0210.44:400.64:511.16:047:02New Moon7Fri
8Sat11:2610.011:3910.55:160.55:280.86:057:00New Moon8Sat
9Sun11:5910.25:500.46:040.76:066:58New Moon9Sun
10Mon12:1410.512:3210.56:220.46:390.56:076:56New Moon10Mon
11Tue12:4810.41:0410.66:540.57:150.46:086:54Waxing Crescent11Tue
12Wed1:2510.31:3910.77:280.77:530.46:106:53Waxing Crescent12Wed
13Thu2:0310.02:1810.78:040.98:350.46:116:51Waxing Crescent13Thu
14Fri2:469.83:0110.78:461.19:220.56:126:49Waxing Crescent14Fri
15Sat3:359.53:5210.69:341.310:170.66:136:47First Quarter15Sat
16Sun4:309.24:5010.410:291.511:190.76:146:45First Quarter16Sun
17Mon5:349.05:5510.411:331.66:156:43First Quarter17Mon
18Tue6:439.17:0510.612:260.612:431.56:166:41Waxing Gibbous18Tue
19Wed7:519.58:1210.91:340.41:531.06:186:40Waxing Gibbous19Wed
20Thu8:5310.19:1411.42:37-0.12:570.46:196:38Waxing Gibbous20Thu
21Fri9:5010.810:1111.73:35-0.63:56-0.36:206:36Full Moon21Fri
22Sat10:4111.411:0511.94:27-0.94:50-0.86:216:34Full Moon22Sat
23Sun11:3011.911:5511.95:16-1.15:42-1.26:226:32Full Moon23Sun
24Mon12:1712.16:04-1.06:31-1.36:246:30Full Moon24Mon
25Tue12:4411.61:0312.06:50-0.67:20-1.16:256:28Waning Gibbous25Tue
26Wed1:3311.21:4911.77:37-0.18:10-0.76:266:26Waning Gibbous26Wed
27Thu2:2310.62:3711.28:240.59:00-0.16:276:25Waning Gibbous27Thu
28Fri3:1410.03:2710.69:141.19:530.56:286:23Third Quarter28Fri
29Sat4:089.44:2110.110:071.710:491.06:296:21Third Quarter29Sat
30Sun4:058.94:209.610:042.110:481.45:315:19Third Quarter30Sun
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 6:21 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 transitional phase. Tonight's moon is 27% 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 shifting between spring and neap.

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 Waxing Crescent (27% illuminated). This places Castine, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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