Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:27 pm (0.6 ft)
Next high tide : in 5h 54m at 2:47 pm (3.1 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:13 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Nov 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:213.46:383.012:440.07:175:41Waning Crescent1Fri
2Sat7:033.77:213.212:33-0.11:27-0.27:195:40New Moon2Sat
3Sun6:463.97:073.31:10-0.21:09-0.36:204:39New Moon3Sun
4Mon7:314.07:543.312:51-0.31:53-0.36:214:38New Moon4Mon
5Tue8:194.08:433.31:35-0.42:38-0.36:224:37Waxing Crescent5Tue
6Wed9:093.99:353.22:21-0.33:26-0.26:234:36Waxing Crescent6Wed
7Thu10:033.710:313.13:10-0.24:220.06:254:34Waxing Crescent7Thu
8Fri11:013.511:323.04:060.05:350.16:264:33First Quarter8Fri
9Sat12:033.35:210.26:500.16:274:32First Quarter9Sat
10Sun12:363.01:073.17:100.37:540.26:284:31First Quarter10Sun
11Mon1:423.02:133.08:310.38:520.16:294:30First Quarter11Mon
12Tue2:503.13:192.99:370.29:440.16:314:29Waxing Gibbous12Tue
13Wed3:533.34:182.910:340.110:300.06:324:29Waxing Gibbous13Wed
14Thu4:473.45:092.911:240.011:100.06:334:28Waxing Gibbous14Thu
15Fri5:353.55:553.012:090.06:344:27Full Moon15Fri
16Sat6:183.56:393.012:500.06:354:26Full Moon16Sat
17Sun6:593.57:203.012:19-0.11:280.06:374:25Full Moon17Sun
18Mon7:383.48:002.912:510.02:030.06:384:24Full Moon18Mon
19Tue8:143.38:402.81:240.02:340.16:394:24Waning Gibbous19Tue
20Wed8:503.19:192.71:590.13:040.26:404:23Waning Gibbous20Wed
21Thu9:252.910:002.52:350.23:350.36:414:22Waning Gibbous21Thu
22Fri10:032.810:442.43:150.44:120.46:424:22Waning Gibbous22Fri
23Sat10:452.611:322.33:590.54:580.56:434:21Waning Gibbous23Sat
24Sun11:312.54:500.75:560.66:454:21Third Quarter24Sun
25Mon12:212.312:222.45:530.76:560.66:464:20Third Quarter25Mon
26Tue1:122.41:162.37:110.77:480.56:474:20Third Quarter26Tue
27Wed2:062.52:152.48:380.68:380.46:484:19Third Quarter27Wed
28Thu3:042.83:192.49:430.49:270.26:494:19Waning Crescent28Thu
29Fri3:593.04:172.610:350.210:130.06:504:18Waning Crescent29Fri
30Sat4:493.45:092.811:22-0.110:59-0.26:514:18Waning Crescent30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 6:07 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 Block Island, RI?

Block Island, RI is currently in a neap phase. Tonight's moon is 58% 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 Block Island, RI 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 Block Island, RI?

Tide predictions for Block Island, RI 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 Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is First Quarter (58% illuminated). This places Block Island, RI 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