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 52m 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 - Dec 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:557.46:256.912:19-0.16:584:25Third Quarter1Sat
2Sun6:567.57:276.912:40-0.21:19-0.36:594:24Waning Crescent2Sun
3Mon7:527.68:246.91:37-0.12:16-0.47:004:24Waning Crescent3Mon
4Tue8:447.79:166.82:310.03:08-0.57:014:24Waning Crescent4Tue
5Wed9:317.610:036.83:210.13:56-0.67:024:24New Moon5Wed
6Thu10:147.610:476.74:070.24:40-0.57:034:24New Moon6Thu
7Fri10:557.411:286.64:510.35:22-0.47:044:24New Moon7Fri
8Sat11:357.35:320.46:02-0.37:054:24New Moon8Sat
9Sun12:086.512:147.16:120.66:41-0.27:064:24Waxing Crescent9Sun
10Mon12:486.412:556.96:530.77:220.07:074:24Waxing Crescent10Mon
11Tue1:296.41:376.77:360.88:040.27:084:24Waxing Crescent11Tue
12Wed2:136.32:236.58:230.98:490.37:084:24Waxing Crescent12Wed
13Thu2:596.33:126.39:131.09:380.57:094:24First Quarter13Thu
14Fri3:486.34:046.110:071.010:290.67:104:24First Quarter14Fri
15Sat4:396.45:006.011:030.911:210.77:114:25First Quarter15Sat
16Sun5:326.55:575.911:590.87:114:25First Quarter16Sun
17Mon6:246.76:536.012:130.712:520.57:124:25Waxing Gibbous17Mon
18Tue7:156.97:466.21:040.61:440.27:134:26Waxing Gibbous18Tue
19Wed8:047.28:376.41:540.52:34-0.27:134:26Waxing Gibbous19Wed
20Thu8:527.59:266.72:430.33:22-0.67:144:26Waxing Gibbous20Thu
21Fri9:407.810:147.03:320.04:10-0.97:144:27Full Moon21Fri
22Sat10:288.111:037.24:20-0.24:58-1.27:154:27Full Moon22Sat
23Sun11:178.211:537.45:10-0.45:46-1.37:154:28Full Moon23Sun
24Mon12:088.26:01-0.56:35-1.47:164:28Waning Gibbous24Mon
25Tue12:447.51:018.16:54-0.67:27-1.37:164:29Waning Gibbous25Tue
26Wed1:387.61:567.87:50-0.68:20-1.17:164:30Waning Gibbous26Wed
27Thu2:337.62:547.58:49-0.59:17-0.97:174:30Third Quarter27Thu
28Fri3:307.53:547.19:51-0.310:15-0.67:174:31Third Quarter28Fri
29Sat4:307.54:576.810:54-0.311:15-0.37:174:32Third Quarter29Sat
30Sun5:307.46:026.511:56-0.27:174:33Third Quarter30Sun
31Mon6:307.37:046.412:14-0.112:57-0.37:184:33Waning Crescent31Mon
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