Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Castine, ME.
Next low tide (tomorrow) : 12:12 am (1.5 ft)
Next high tide : in 3h 06m at 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 - Sep 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:5711.05:45-0.66:00-0.25:577:12New Moon1Thu
2Fri12:1311.712:3911.56:26-0.86:46-0.65:587:10Waxing Crescent2Fri
3Sat12:5911.71:2311.87:09-0.87:34-0.86:007:08Waxing Crescent3Sat
4Sun1:4711.52:0911.97:55-0.68:25-0.86:017:06Waxing Crescent4Sun
5Mon2:3811.12:5911.88:43-0.29:19-0.66:027:05Waxing Crescent5Mon
6Tue3:3310.53:5311.59:360.310:19-0.26:037:03First Quarter6Tue
7Wed4:3310.04:5411.110:340.911:230.16:047:01First Quarter7Wed
8Thu5:409.56:0010.711:401.36:056:59First Quarter8Thu
9Fri6:509.27:1010.512:320.412:501.56:076:57Waxing Gibbous9Fri
10Sat7:599.38:1810.61:410.41:591.46:086:55Waxing Gibbous10Sat
11Sun9:029.59:1810.82:450.33:011.16:096:54Waxing Gibbous11Sun
12Mon9:569.810:1210.93:410.13:570.86:106:52Waxing Gibbous12Mon
13Tue10:4410.211:0011.04:310.04:470.56:116:50Full Moon13Tue
14Wed11:2710.411:4310.95:15-0.15:320.36:126:48Full Moon14Wed
15Thu12:0610.55:550.16:130.36:146:46Full Moon15Thu
16Fri12:2410.712:4210.66:320.36:520.46:156:44Full Moon16Fri
17Sat1:0210.41:1710.57:080.67:300.56:166:42Waning Gibbous17Sat
18Sun1:4010.01:5310.37:431.08:080.86:176:40Waning Gibbous18Sun
19Mon2:189.62:2910.18:181.58:481.06:186:39Waning Gibbous19Mon
20Tue2:599.23:099.88:571.99:301.36:196:37Waning Gibbous20Tue
21Wed3:438.83:539.59:392.210:181.66:216:35Third Quarter21Wed
22Thu4:328.44:439.310:272.511:111.86:226:33Third Quarter22Thu
23Fri5:278.25:409.211:222.76:236:31Third Quarter23Fri
24Sat6:278.26:419.312:101.812:222.66:246:29Third Quarter24Sat
25Sun6:278.46:409.61:101.612:222.35:255:27Waning Crescent25Sun
26Mon7:218.97:3510.11:061.21:191.75:265:25Waning Crescent26Mon
27Tue8:119.68:2610.71:570.62:111.05:285:24Waning Crescent27Tue
28Wed8:5710.49:1511.22:430.03:010.25:295:22New Moon28Wed
29Thu9:4111.110:0211.63:28-0.53:48-0.55:305:20New Moon29Thu
30Fri10:2511.810:4911.84:12-0.84:36-1.15:315:18New Moon30Fri
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 8:58 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