Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 16, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 27m at 3:28 am (-0.4 ft)
Next high tide : 9:14 am (3.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (4% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Sep 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:372.24:062.78:580.811:170.86:137:19Waning Crescent1Wed
2Thu4:472.25:132.810:140.76:147:17Waning Crescent2Thu
3Fri5:402.46:013.012:030.711:19 AM0.66:157:15Waning Crescent3Fri
4Sat6:232.76:413.212:440.512:100.46:167:14Waning Crescent4Sat
5Sun7:043.07:213.41:200.312:560.26:177:12New Moon5Sun
6Mon7:443.28:013.51:530.11:410.06:187:10New Moon6Mon
7Tue8:263.58:423.62:230.02:25-0.16:197:09New Moon7Tue
8Wed9:093.69:253.52:52-0.13:09-0.16:207:07New Moon8Wed
9Thu9:533.810:103.43:24-0.23:54-0.16:217:05Waxing Crescent9Thu
10Fri10:403.810:593.23:59-0.24:420.06:227:04Waxing Crescent10Fri
11Sat11:313.711:523.04:39-0.15:390.26:237:02Waxing Crescent11Sat
12Sun12:273.65:250.16:580.46:247:00First Quarter12Sun
13Mon12:502.81:283.56:220.38:260.56:256:58First Quarter13Mon
14Tue1:532.72:353.37:340.49:420.56:266:57First Quarter14Tue
15Wed3:032.73:503.39:150.510:470.46:276:55Waxing Gibbous15Wed
16Thu4:182.75:003.310:420.411:420.36:286:53Waxing Gibbous16Thu
17Fri5:242.95:593.411:450.26:296:52Waxing Gibbous17Fri
18Sat6:183.26:483.512:290.212:370.16:306:50Waxing Gibbous18Sat
19Sun7:073.47:333.51:110.11:250.06:316:48Full Moon19Sun
20Mon7:513.58:143.51:480.02:070.06:326:46Full Moon20Mon
21Tue8:323.68:523.42:200.02:450.16:336:45Full Moon21Tue
22Wed9:113.59:303.22:470.03:190.16:346:43Full Moon22Wed
23Thu9:473.410:063.03:110.03:490.26:356:41Waning Gibbous23Thu
24Fri10:223.310:432.83:370.24:190.46:366:40Waning Gibbous24Fri
25Sat10:563.111:232.64:070.34:530.66:376:38Waning Gibbous25Sat
26Sun11:332.94:420.55:350.76:386:36Waning Gibbous26Sun
27Mon12:072.412:152.75:230.76:370.96:396:34Third Quarter27Mon
28Tue12:562.31:042.66:120.88:361.06:406:33Third Quarter28Tue
29Wed1:512.22:032.67:120.99:490.96:416:31Third Quarter29Wed
30Thu2:542.23:122.68:240.910:450.86:426:29Third Quarter30Thu
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 4% 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 (4% 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