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 4h 00m at 11:15 pm (1.2 ft)
Next high tide (tomorrow) : 5:28 am (8.9 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 - Mar 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:3110.511:5210.15:210.65:430.16:135:22New Moon1Sat
2Sun12:0510.55:550.56:140.26:115:23Waxing Crescent2Sun
3Mon12:2410.212:4010.36:300.46:470.36:095:24Waxing Crescent3Mon
4Tue12:5810.41:1810.17:070.37:220.56:085:26Waxing Crescent4Tue
5Wed1:3410.41:599.87:480.38:010.76:065:27Waxing Crescent5Wed
6Thu2:1610.42:469.58:340.48:471.06:045:28First Quarter6Thu
7Fri3:0410.33:419.19:270.59:401.36:025:30First Quarter7Fri
8Sat4:0010.24:458.810:280.610:431.56:005:31First Quarter8Sat
9Sun5:0510.15:558.811:370.611:541.55:595:32First Quarter9Sun
10Mon6:1610.37:069.112:480.35:575:33Waxing Gibbous10Mon
11Tue7:2610.78:119.71:051.11:54-0.25:555:35Waxing Gibbous11Tue
12Wed8:3011.29:0910.42:120.52:54-0.75:535:36Waxing Gibbous12Wed
13Thu9:2811.710:0111.03:11-0.23:47-1.25:515:37Full Moon13Thu
14Fri10:2112.010:5011.54:06-0.84:37-1.55:505:39Full Moon14Fri
15Sat11:1112.111:3611.84:57-1.25:24-1.45:485:40Full Moon15Sat
16Sun12:0011.95:47-1.46:10-1.15:465:41Waning Gibbous16Sun
17Mon12:2211.812:4911.46:35-1.26:56-0.65:445:42Waning Gibbous17Mon
18Tue1:0711.51:3710.87:24-0.97:420.05:425:44Waning Gibbous18Tue
19Wed1:5411.12:2710.18:13-0.48:300.85:405:45Waning Gibbous19Wed
20Thu2:4210.53:209.49:050.29:211.55:395:46Third Quarter20Thu
21Fri3:349.94:188.810:010.810:172.05:375:47Third Quarter21Fri
22Sat4:329.45:208.411:011.311:192.35:355:49Third Quarter22Sat
23Sun5:349.16:238.312:031.55:335:50Third Quarter23Sun
24Mon6:379.17:218.412:212.41:031.55:315:51Waning Crescent24Mon
25Tue7:359.38:128.71:202.11:571.35:295:52Waning Crescent25Tue
26Wed8:259.68:579.12:121.82:431.05:285:54Waning Crescent26Wed
27Thu9:109.99:369.52:581.33:240.75:265:55Waning Crescent27Thu
28Fri9:5010.210:119.93:390.94:010.55:245:56New Moon28Fri
29Sat10:2710.310:4510.34:160.64:350.35:225:57New Moon29Sat
30Sun11:0310.411:1710.64:520.25:080.35:205:59New Moon30Sun
31Mon11:3910.411:5110.85:280.05:410.35:186:00New Moon31Mon
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 2:21 am — 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