Tides Today & Tomorrow in Castine, ME

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Castine, ME.
Next low tide : in 2h 12m at 11:55 pm (1.0 ft)
Next high tide (tomorrow) : 6:07 am (9.2 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:10 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8414672
Common Questions About Tides

Castine, ME Tides - Sep 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:5011.12:1111.07:59-0.18:250.15:587:12Waning Gibbous1Thu
2Fri2:3510.62:5510.78:430.49:110.55:597:10Waning Gibbous2Fri
3Sat3:2110.03:4110.39:271.09:590.96:007:08Third Quarter3Sat
4Sun4:109.54:299.910:141.410:501.26:017:06Third Quarter4Sun
5Mon5:029.15:219.711:051.811:441.56:027:04Third Quarter5Mon
6Tue5:578.86:169.511:592.06:037:03Third Quarter6Tue
7Wed6:548.77:129.512:401.612:552.16:047:01Third Quarter7Wed
8Thu7:508.88:069.71:361.51:501.96:066:59Waning Crescent8Thu
9Fri8:429.18:5710.02:281.22:421.66:076:57Waning Crescent9Fri
10Sat9:289.59:4310.43:150.83:291.26:086:55Waning Crescent10Sat
11Sun10:1110.010:2610.83:590.44:130.76:096:53New Moon11Sun
12Mon10:5110.511:0711.14:390.14:550.36:106:52New Moon12Mon
13Tue11:3010.911:4811.35:19-0.25:36-0.26:116:50New Moon13Tue
14Wed12:1011.35:58-0.56:18-0.56:136:48New Moon14Wed
15Thu12:3111.412:5111.66:39-0.67:03-0.76:146:46Waxing Crescent15Thu
16Fri1:1511.41:3511.87:22-0.57:50-0.86:156:44Waxing Crescent16Fri
17Sat2:0211.22:2311.88:08-0.38:40-0.76:166:42Waxing Crescent17Sat
18Sun2:5410.93:1511.68:590.09:35-0.56:176:40First Quarter18Sun
19Mon3:5010.54:1211.39:550.310:36-0.26:186:38First Quarter19Mon
20Tue4:5210.25:1511.110:570.611:410.06:206:37First Quarter20Tue
21Wed5:589.96:2310.912:040.86:216:35First Quarter21Wed
22Thu7:079.97:3110.912:490.01:130.76:226:33Waxing Gibbous22Thu
23Fri8:1210.28:3511.01:54-0.12:180.46:236:31Waxing Gibbous23Fri
24Sat9:1110.59:3311.22:55-0.33:180.16:246:29Waxing Gibbous24Sat
25Sun10:0410.910:2611.43:49-0.54:12-0.36:256:27Full Moon25Sun
26Mon10:5211.211:1411.44:39-0.65:02-0.56:276:25Full Moon26Mon
27Tue11:3711.311:5911.35:25-0.55:48-0.66:286:23Full Moon27Tue
28Wed12:1811.36:07-0.36:31-0.56:296:22Full Moon28Wed
29Thu12:4211.012:5811.26:480.07:13-0.26:306:20Waning Gibbous29Thu
30Fri1:2410.61:3810.97:280.47:550.16:316:18Waning Gibbous30Fri
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 3:01 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 52% 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 (52% 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