Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, June 15, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 5h 53m at 3:28 am (-0.4 ft)
Next high tide (tomorrow) : 9:14 am (3.3 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Mar 2030

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:203.15:402.911:48-0.36:205:37Waning Crescent1Fri
2Sat6:083.16:273.112:02-0.312:29-0.46:185:38New Moon2Sat
3Sun6:513.27:103.212:47-0.41:05-0.56:165:39New Moon3Sun
4Mon7:323.17:503.21:27-0.41:36-0.56:155:40New Moon4Mon
5Tue8:103.08:283.22:03-0.42:02-0.46:135:41New Moon5Tue
6Wed8:462.99:023.12:34-0.32:25-0.46:125:42Waxing Crescent6Wed
7Thu9:222.79:362.93:02-0.12:51-0.26:105:43Waxing Crescent7Thu
8Fri9:582.510:102.73:300.03:22-0.16:085:45Waxing Crescent8Fri
9Sat10:362.310:472.54:030.23:580.16:075:46Waxing Crescent9Sat
10Sun12:192.15:450.45:400.37:056:47First Quarter10Sun
11Mon12:302.31:071.96:410.66:310.47:036:48First Quarter11Mon
12Tue1:202.22:021.88:450.77:330.57:026:49First Quarter12Tue
13Wed2:202.23:091.910:050.68:470.57:006:50First Quarter13Wed
14Thu3:352.24:242.011:000.510:180.46:596:51Waxing Gibbous14Thu
15Fri4:502.45:222.311:440.311:250.16:576:52Waxing Gibbous15Fri
16Sat5:432.66:092.712:210.06:556:54Waxing Gibbous16Sat
17Sun6:282.96:523.012:16-0.112:54-0.26:546:55Waxing Gibbous17Sun
18Mon7:113.17:353.41:03-0.41:26-0.46:526:56Full Moon18Mon
19Tue7:543.28:193.61:48-0.61:59-0.66:506:57Full Moon19Tue
20Wed8:393.39:043.82:33-0.72:35-0.76:496:58Full Moon20Wed
21Thu9:253.39:503.83:18-0.73:13-0.76:476:59Waning Gibbous21Thu
22Fri10:123.110:393.74:04-0.63:53-0.66:457:00Waning Gibbous22Fri
23Sat11:033.011:333.54:53-0.44:38-0.46:437:01Waning Gibbous23Sat
24Sun11:582.85:54-0.25:30-0.26:427:02Waning Gibbous24Sun
25Mon12:323.312:592.67:140.06:370.06:407:03Third Quarter25Mon
26Tue1:363.12:042.58:340.18:230.26:387:04Third Quarter26Tue
27Wed2:462.93:162.59:430.29:560.26:377:05Third Quarter27Wed
28Thu4:002.84:282.610:440.111:050.16:357:07Waning Crescent28Thu
29Fri5:062.85:302.811:350.06:337:08Waning Crescent29Fri
30Sat6:002.86:213.012:010.012:18-0.16:327:09Waning Crescent30Sat
31Sun6:462.97:063.212:49-0.112:56-0.16:307:10Waning Crescent31Sun
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 6:21 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 spring phase. Tonight's moon is 0% 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 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 New Moon (0% illuminated). This places Block Island, RI 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