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 1h 22m 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 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:479.83:069.98:541.19:181.35:567:13Waxing Crescent1Thu
2Fri3:289.43:469.89:321.510:011.45:587:11First Quarter2Fri
3Sat4:129.14:309.610:141.810:491.65:597:10First Quarter3Sat
4Sun5:028.75:209.511:022.111:431.66:007:08First Quarter4Sun
5Mon5:578.56:149.511:552.26:017:06First Quarter5Mon
6Tue6:568.57:139.812:411.512:532.16:027:04Waxing Gibbous6Tue
7Wed7:568.88:1110.21:401.21:521.86:037:02Waxing Gibbous7Wed
8Thu8:529.39:0610.72:370.72:491.36:057:01Waxing Gibbous8Thu
9Fri9:449.99:5911.33:300.13:430.76:066:59Waxing Gibbous9Fri
10Sat10:3310.510:4911.94:20-0.54:340.06:076:57Full Moon10Sat
11Sun11:2111.211:3912.25:08-1.05:24-0.66:086:55Full Moon11Sun
12Mon12:0811.75:55-1.36:15-1.06:096:53Full Moon12Mon
13Tue12:2912.412:5612.16:42-1.47:06-1.36:106:51Waning Gibbous13Tue
14Wed1:2012.21:4512.27:31-1.37:59-1.36:116:49Waning Gibbous14Wed
15Thu2:1311.82:3612.18:21-0.98:54-1.16:136:48Waning Gibbous15Thu
16Fri3:0811.33:3111.89:15-0.39:53-0.76:146:46Third Quarter16Fri
17Sat4:0810.64:2911.310:120.310:55-0.36:156:44Third Quarter17Sat
18Sun5:1210.15:3310.911:150.86:166:42Third Quarter18Sun
19Mon6:199.66:3910.612:010.112:211.26:176:40Third Quarter19Mon
20Tue7:269.57:4510.51:070.31:271.36:186:38Waning Crescent20Tue
21Wed8:299.58:4610.52:110.42:301.26:206:36Waning Crescent21Wed
22Thu9:259.79:4110.63:090.33:261.06:216:34Waning Crescent22Thu
23Fri10:1410.010:2810.73:590.24:150.86:226:33Waning Crescent23Fri
24Sat10:5610.211:1110.74:440.15:000.66:236:31New Moon24Sat
25Sun10:3510.310:5010.74:240.24:400.55:245:29New Moon25Sun
26Mon11:1010.411:2710.55:010.35:170.55:265:27New Moon26Mon
27Tue11:4410.45:350.55:530.55:275:25New Moon27Tue
28Wed12:0210.312:1710.46:080.86:280.65:285:23Waxing Crescent28Wed
29Thu12:3810.012:5010.36:411.17:040.85:295:21Waxing Crescent29Thu
30Fri1:159.71:2610.17:151.47:421.05:305:20Waxing Crescent30Fri
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