Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Castine, ME.
Next low tide : 10:21 pm (0.8 ft)
Next high tide : in 1h 04m at 4:01 pm (10.4 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:42 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - Apr 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:379.98:159.41:201.41:570.65:166:02Waning Crescent1Fri
2Sat8:3310.19:039.72:181.12:480.55:146:03Waning Crescent2Sat
3Sun9:2110.29:4510.03:080.73:320.45:126:04Waning Crescent3Sun
4Mon10:0310.310:2210.33:520.44:110.45:106:05New Moon4Mon
5Tue10:4210.210:5610.44:320.34:470.55:086:07New Moon5Tue
6Wed11:1810.111:2810.55:080.25:200.75:066:08New Moon6Wed
7Thu11:539.95:430.25:521.05:056:09New Moon7Thu
8Fri12:0010.412:289.76:170.36:241.35:036:10Waxing Crescent8Fri
9Sat12:3310.31:049.46:520.56:581.55:016:11Waxing Crescent9Sat
10Sun1:0810.11:419.17:280.77:351.84:596:13Waxing Crescent10Sun
11Mon1:469.92:238.98:090.98:162.14:586:14Waxing Crescent11Mon
12Tue2:299.73:108.68:541.19:042.24:566:15First Quarter12Tue
13Wed3:199.64:048.59:461.29:592.34:546:16First Quarter13Wed
14Thu4:169.55:038.610:441.211:012.14:526:18First Quarter14Thu
15Fri5:189.66:049.011:451.04:516:19First Quarter15Fri
16Sat6:229.97:029.612:051.712:440.64:496:20Waxing Gibbous16Sat
17Sun7:2310.47:5610.41:071.01:390.14:476:21Waxing Gibbous17Sun
18Mon8:1910.98:4711.22:040.22:31-0.44:466:22Waxing Gibbous18Mon
19Tue9:1311.39:3511.92:59-0.73:21-0.84:446:24Full Moon19Tue
20Wed10:0511.610:2312.43:51-1.44:09-0.94:426:25Full Moon20Wed
21Thu10:5611.711:1212.74:42-1.94:58-0.94:416:26Full Moon21Thu
22Fri11:4811.55:33-2.05:48-0.64:396:27Waning Gibbous22Fri
23Sat12:0112.612:4111.26:25-1.86:40-0.24:376:29Waning Gibbous23Sat
24Sun12:5312.22:3610.78:19-1.48:350.45:367:30Waning Gibbous24Sun
25Mon2:4911.73:3510.19:17-0.89:340.95:347:31Waning Gibbous25Mon
26Tue3:4811.04:379.610:18-0.110:381.45:337:32Third Quarter26Tue
27Wed4:5310.45:439.311:220.411:451.75:317:33Third Quarter27Wed
28Thu6:009.96:489.212:260.85:307:35Third Quarter28Thu
29Fri7:079.77:489.312:521.71:281.05:287:36Waning Crescent29Fri
30Sat8:099.68:429.61:551.52:231.05:277:37Waning Crescent30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8414672)

Common Questions About Castine, ME Tides

Show All
What time does the tide turn (slack tide) in Castine, ME today?

Slack tide in Castine, ME is approximately 7:11 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 36% 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 First Quarter (36% 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