Tides Today & Tomorrow in Black Rock Harbor, CT

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in Black Rock Harbor, CT.
Next low tide : in 5h 39m at 11:18 am (0.2 ft)
Next high tide : 5:33 pm (7.4 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 5:20 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8467373
Common Questions About Tides

Black Rock Harbor, CT Tides - Apr 2019

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:366.410:036.43:290.93:550.66:367:17Waning Crescent1Mon
2Tue10:216.610:436.64:160.74:370.56:347:18Waning Crescent2Tue
3Wed11:016.711:206.84:580.55:160.46:327:19New Moon3Wed
4Thu11:396.711:557.05:370.35:520.46:317:20New Moon4Thu
5Fri12:166.86:150.16:280.36:297:21New Moon5Fri
6Sat12:307.212:536.96:520.07:030.36:277:22New Moon6Sat
7Sun1:077.41:336.97:29-0.17:400.36:267:23Waxing Crescent7Sun
8Mon1:467.42:156.88:10-0.28:200.46:247:24Waxing Crescent8Mon
9Tue2:297.53:016.88:54-0.19:060.56:227:26Waxing Crescent9Tue
10Wed3:177.43:536.79:45-0.110:000.66:217:27Waxing Crescent10Wed
11Thu4:117.34:506.610:420.011:010.76:197:28First Quarter11Thu
12Fri5:117.25:526.611:440.16:187:29First Quarter12Fri
13Sat6:167.26:586.812:070.612:480.16:167:30First Quarter13Sat
14Sun7:237.28:027.11:140.41:50-0.16:147:31Waxing Gibbous14Sun
15Mon8:287.49:017.52:190.12:49-0.36:137:32Waxing Gibbous15Mon
16Tue9:287.69:567.93:19-0.33:45-0.56:117:33Waxing Gibbous16Tue
17Wed10:237.710:478.24:16-0.64:37-0.66:107:34Waxing Gibbous17Wed
18Thu11:157.811:358.45:08-0.95:27-0.66:087:35Full Moon18Thu
19Fri12:047.85:57-1.06:14-0.66:077:36Full Moon19Fri
20Sat12:228.412:517.76:45-1.07:00-0.46:057:37Full Moon20Sat
21Sun1:078.21:387.47:31-0.97:46-0.16:047:38Waning Gibbous21Sun
22Mon1:538.02:257.28:17-0.68:320.26:027:39Waning Gibbous22Mon
23Tue2:397.63:126.99:05-0.29:210.66:017:40Waning Gibbous23Tue
24Wed3:277.34:026.69:540.110:130.96:007:42Waning Gibbous24Wed
25Thu4:186.94:556.310:470.511:081.25:587:43Third Quarter25Thu
26Fri5:126.65:526.211:430.75:577:44Third Quarter26Fri
27Sat6:106.36:496.212:071.312:390.95:557:45Third Quarter27Sat
28Sun7:106.27:466.31:061.31:340.95:547:46Third Quarter28Sun
29Mon8:076.38:376.52:021.22:260.95:537:47Waning Crescent29Mon
30Tue8:596.39:236.72:541.03:140.85:517:48Waning Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8467373)

Common Questions About Black Rock Harbor, CT Tides

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What time does the tide turn (slack tide) in Black Rock Harbor, CT today?

Slack tide in Black Rock Harbor, CT is approximately 2:25 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 Black Rock Harbor, CT?

Black Rock Harbor, CT is currently in a neap phase. Tonight's moon is 48% 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 Black Rock Harbor, CT 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 Black Rock Harbor, CT?

Tide predictions for Black Rock Harbor, CT 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 Black Rock Harbor, CT?

Tide data for Black Rock Harbor, CT is sourced from NOAA Station #8467373. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8467373.

What is the moon phase in Black Rock Harbor, CT tonight?

Tonight the moon over Black Rock Harbor, CT is First Quarter (48% illuminated). This places Black Rock Harbor, CT 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