Tides Today & Tomorrow in Black Rock Harbor, CT

TIDE TIMES for Thursday, June 18, 2026
The tide is currently rising in Black Rock Harbor, CT.
Next low tide : 9:01 pm (0.1 ft)
Next high tide : in 3h 45m at 2:49 pm (7.6 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Crescent (17% illuminated)
Tide Station Location : Station #8467373
Common Questions About Tides

Black Rock Harbor, CT Tides - May 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:208.41:537.77:45-1.08:02-0.25:497:50Waxing Crescent1Sun
2Mon2:098.12:447.48:34-0.78:530.15:487:51Waxing Crescent2Mon
3Tue3:007.73:357.29:25-0.39:470.45:477:52Waxing Crescent3Tue
4Wed3:527.34:286.910:180.010:430.75:457:53First Quarter4Wed
5Thu4:476.95:246.711:130.411:410.95:447:54First Quarter5Thu
6Fri5:446.66:206.612:080.65:437:55First Quarter6Fri
7Sat6:436.47:166.612:401.01:030.85:427:56First Quarter7Sat
8Sun7:416.38:096.71:360.91:560.85:417:57Waxing Gibbous8Sun
9Mon8:356.38:576.82:290.82:460.95:407:58Waxing Gibbous9Mon
10Tue9:246.49:417.03:190.73:320.95:397:59Waxing Gibbous10Tue
11Wed10:086.510:217.14:040.54:160.95:378:00Waxing Gibbous11Wed
12Thu10:506.511:007.24:470.34:570.85:368:01Full Moon12Thu
13Fri11:296.611:377.35:260.25:350.85:358:02Full Moon13Fri
14Sat12:076.76:050.16:130.75:348:03Full Moon14Sat
15Sun12:157.412:466.86:430.06:520.75:338:04Full Moon15Sun
16Mon12:557.51:286.97:22-0.17:330.65:338:05Waning Gibbous16Mon
17Tue1:377.52:127.08:04-0.18:180.65:328:06Waning Gibbous17Tue
18Wed2:237.52:597.18:50-0.19:080.65:318:07Waning Gibbous18Wed
19Thu3:147.53:517.29:40-0.110:040.55:308:08Waning Gibbous19Thu
20Fri4:097.44:467.310:340.011:050.45:298:09Third Quarter20Fri
21Sat5:087.25:457.511:330.05:288:10Third Quarter21Sat
22Sun6:117.26:457.712:080.312:320.05:288:11Third Quarter22Sun
23Mon7:157.27:457.91:110.01:320.05:278:12Waning Crescent23Mon
24Tue8:187.38:438.22:12-0.32:30-0.15:268:12Waning Crescent24Tue
25Wed9:177.49:398.43:10-0.63:27-0.25:258:13Waning Crescent25Wed
26Thu10:137.510:318.54:06-0.84:21-0.25:258:14Waning Crescent26Thu
27Fri11:057.611:218.54:58-0.95:13-0.25:248:15New Moon27Fri
28Sat11:567.65:49-1.06:03-0.25:248:16New Moon28Sat
29Sun12:108.412:457.56:37-0.96:520.05:238:17New Moon29Sun
30Mon12:588.11:337.47:24-0.77:410.25:238:17Waxing Crescent30Mon
31Tue1:467.92:207.38:11-0.58:290.45:228:18Waxing Crescent31Tue
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 5:55 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 spring phase. Tonight's moon is 17% 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 maximum.

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 Waxing Crescent (17% illuminated). This places Black Rock Harbor, CT in a spring tide cycle, so tidal ranges are near their weekly maximum 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