Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 15m at 6:02 am (-0.1 ft)
Next high tide : 11:57 am (3.2 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Mar 2036

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:252.89:442.92:59-0.23:09-0.36:195:37Waxing Crescent1Sat
2Sun10:072.710:282.93:36-0.13:46-0.26:175:38Waxing Crescent2Sun
3Mon10:552.511:182.94:200.04:29-0.26:165:40Waxing Crescent3Mon
4Tue11:492.45:150.15:21-0.16:145:41First Quarter4Tue
5Wed12:142.812:492.46:270.26:230.06:125:42First Quarter5Wed
6Thu1:172.81:572.48:200.27:350.06:115:43First Quarter6Thu
7Fri2:282.93:112.59:410.09:04-0.16:095:44Waxing Gibbous7Fri
8Sat3:443.04:202.710:40-0.210:25-0.36:075:45Waxing Gibbous8Sat
9Sun5:493.36:183.112:31-0.47:066:46Waxing Gibbous9Sun
10Mon6:453.57:113.412:27-0.51:19-0.67:046:47Waxing Gibbous10Mon
11Tue7:353.68:003.61:22-0.72:03-0.77:036:49Full Moon11Tue
12Wed8:233.68:483.72:13-0.82:43-0.87:016:50Full Moon12Wed
13Thu9:093.59:343.73:00-0.83:20-0.76:596:51Full Moon13Thu
14Fri9:543.310:193.53:44-0.73:53-0.66:586:52Waning Gibbous14Fri
15Sat10:383.011:043.34:26-0.54:23-0.46:566:53Waning Gibbous15Sat
16Sun11:242.711:513.05:08-0.24:54-0.16:546:54Waning Gibbous16Sun
17Mon12:112.45:550.15:290.16:536:55Waning Gibbous17Mon
18Tue12:412.71:022.26:580.36:130.46:516:56Third Quarter18Tue
19Wed1:342.51:572.08:150.57:100.56:496:57Third Quarter19Wed
20Thu2:352.33:031.99:270.68:360.66:486:58Third Quarter20Thu
21Fri3:512.24:202.010:290.510:260.66:467:00Third Quarter21Fri
22Sat4:592.35:202.111:200.411:230.46:447:01Waning Crescent22Sat
23Sun5:502.46:052.312:030.36:437:02Waning Crescent23Sun
24Mon6:302.66:422.612:100.312:410.16:417:03Waning Crescent24Mon
25Tue7:042.87:162.812:510.11:150.06:397:04Waning Crescent25Tue
26Wed7:372.97:493.01:30-0.11:45-0.26:387:05New Moon26Wed
27Thu8:103.08:243.22:06-0.22:11-0.36:367:06New Moon27Thu
28Fri8:463.09:003.32:40-0.32:38-0.36:347:07New Moon28Fri
29Sat9:243.09:393.43:13-0.33:09-0.46:327:08New Moon29Sat
30Sun10:052.910:213.33:47-0.33:43-0.36:317:09Waxing Crescent30Sun
31Mon10:502.811:083.34:25-0.24:22-0.36:297:10Waxing Crescent31Mon
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 8:59 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 Block Island, RI?

Block Island, RI is currently in a transitional phase. Tonight's moon is 27% 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 shifting between spring and neap.

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 Waxing Crescent (27% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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