Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 5:58 pm (0.1 ft)
Next high tide : in 5h 15m at 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 - May 2019

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:152.66:302.912:100.412:130.25:437:43Waning Crescent1Wed
2Thu6:502.77:033.112:520.212:430.15:427:44Waning Crescent2Thu
3Fri7:252.87:373.31:310.11:120.05:417:45New Moon3Fri
4Sat8:012.98:133.52:10-0.11:43-0.15:407:46New Moon4Sat
5Sun8:392.98:513.52:45-0.12:17-0.15:387:47New Moon5Sun
6Mon9:202.99:333.53:20-0.12:54-0.25:377:48New Moon6Mon
7Tue10:042.910:173.53:55-0.13:34-0.15:367:49Waxing Crescent7Tue
8Wed10:512.811:063.44:340.04:180.05:357:50Waxing Crescent8Wed
9Thu11:442.85:220.15:080.15:347:51Waxing Crescent9Thu
10Fri12:003.312:422.76:280.26:080.25:337:52First Quarter10Fri
11Sat1:003.21:432.87:520.27:230.35:317:53First Quarter11Sat
12Sun2:033.12:482.99:020.28:570.35:307:54First Quarter12Sun
13Mon3:103.03:563.110:030.110:230.25:297:55First Quarter13Mon
14Tue4:193.05:003.310:570.011:280.05:287:56Waxing Gibbous14Tue
15Wed5:233.15:563.611:44-0.15:277:57Waxing Gibbous15Wed
16Thu6:183.16:473.812:25-0.112:27-0.25:267:58Waxing Gibbous16Thu
17Fri7:083.27:353.91:16-0.31:09-0.35:267:59Full Moon17Fri
18Sat7:573.28:213.92:05-0.31:48-0.35:258:00Full Moon18Sat
19Sun8:433.19:063.82:50-0.32:26-0.25:248:01Full Moon19Sun
20Mon9:293.09:503.63:32-0.23:020.05:238:02Full Moon20Mon
21Tue10:142.910:333.44:12-0.13:380.15:228:03Waning Gibbous21Tue
22Wed10:592.711:183.14:510.14:150.35:218:04Waning Gibbous22Wed
23Thu11:472.65:350.34:570.55:218:05Waning Gibbous23Thu
24Fri12:052.912:382.46:290.55:460.75:208:05Third Quarter24Fri
25Sat12:542.71:292.47:290.66:510.85:198:06Third Quarter25Sat
26Sun1:442.52:212.38:230.68:240.95:198:07Third Quarter26Sun
27Mon2:362.43:162.49:120.69:440.85:188:08Third Quarter27Mon
28Tue3:342.44:132.59:570.610:450.75:178:09Third Quarter28Tue
29Wed4:332.45:022.710:370.511:350.55:178:10Waning Crescent29Wed
30Thu5:222.55:433.011:130.35:168:10Waning Crescent30Thu
31Fri6:062.66:233.212:200.311:49 AM0.25:168:11Waning Crescent31Fri
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 2:57 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 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