Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

71°
H -°
L 68°
SW
9mph
Low tide
12:01 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, August 23, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 11m at 12:01 am (0.7 ft)
Next high tide (tomorrow) : 5:49 am (2.3 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 6:04 am
Moon phase : Waxing Gibbous (81% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
Coast Guard Station, Point Judith Rhode Island,

USCG Station Point Judith, RI
Beach in East Hampton, NY -- Nicole Mayone, CC BY-SA 2.0 , via Wikimedia Commons

East Hampton Harbormaster

Block Island, RI Tides - Nov 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:423.25:572.711:550.311:430.26:164:43Waning Crescent1Fri
2Sat6:173.36:302.812:310.26:184:41New Moon2Sat
3Sun6:493.37:032.812:100.21:060.16:194:40New Moon3Sun
4Mon7:213.37:372.812:390.11:390.16:204:39New Moon4Mon
5Tue7:543.38:122.71:110.22:110.26:214:38New Moon5Tue
6Wed8:303.28:502.61:460.22:430.36:224:37Waxing Crescent6Wed
7Thu9:093.19:322.62:220.33:170.46:244:36Waxing Crescent7Thu
8Fri9:523.010:202.53:010.43:570.46:254:34Waxing Crescent8Fri
9Sat10:412.911:132.53:460.54:460.56:264:33Waxing Crescent9Sat
10Sun11:362.94:400.65:470.56:274:32First Quarter10Sun
11Mon12:112.612:342.85:470.66:550.46:284:31First Quarter11Mon
12Tue1:112.71:362.87:120.67:580.26:304:30First Quarter12Tue
13Wed2:153.02:422.98:490.48:570.16:314:29Waxing Gibbous13Wed
14Thu3:193.33:473.010:000.19:50-0.16:324:29Waxing Gibbous14Thu
15Fri4:183.64:463.110:57-0.110:40-0.36:334:28Waxing Gibbous15Fri
16Sat5:123.95:403.311:50-0.411:28-0.56:344:27Waxing Gibbous16Sat
17Sun6:044.16:323.412:42-0.56:364:26Full Moon17Sun
18Mon6:544.27:223.412:16-0.61:33-0.56:374:25Full Moon18Mon
19Tue7:454.18:133.31:05-0.62:22-0.56:384:24Full Moon19Tue
20Wed8:353.99:043.21:53-0.53:11-0.36:394:24Waning Gibbous20Wed
21Thu9:263.79:563.02:41-0.34:02-0.16:404:23Waning Gibbous21Thu
22Fri10:193.310:522.93:300.04:590.16:414:22Waning Gibbous22Fri
23Sat11:153.011:502.74:250.26:010.36:434:22Third Quarter23Sat
24Sun12:112.75:440.56:580.46:444:21Third Quarter24Sun
25Mon12:492.71:082.57:090.67:500.46:454:21Third Quarter25Mon
26Tue1:482.62:072.38:170.68:370.56:464:20Third Quarter26Tue
27Wed2:482.63:072.39:160.69:200.56:474:20Waning Crescent27Wed
28Thu3:442.74:022.310:060.59:580.46:484:19Waning Crescent28Thu
29Fri4:312.84:472.310:510.410:320.36:494:19Waning Crescent29Fri
30Sat5:123.05:262.411:320.311:050.26:504:19Waning Crescent30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

www.USHarbors.com

© 2026 US Harbors LLC All rights reserved

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Common Questions About Block Island, RI Tides

Collapse All
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 81% 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 Waxing Gibbous (81% 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

Coastal Stories See All

Image Credits: fisheries.noaa.gov.

Technology Week: Launching into the Future with Advanced Technologies

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA scientists rely on cutting-edge technology to collect and analyze the data… More

Ocean Science

Rhyl Frith prepares to catch the FreeFly Astro research drone on the R/V Nancy Foster while tagging whales. Taken under NOAA permit # 27066. Credit: Julia Zeh

Giving North Atlantic Right Whales a Check-Up Using Advanced Technology

By fisheries.noaa.gov, fisheries.noaa.gov. This story is part three of a three-part series. Read about how… More

Ocean Science

Image Credits: Fisheries.noaa.gov.

The Unexpected Catch: Friendship at Sea

By fisheries.noaa.gov, fisheries.noaa.gov. One Random Room Assignment When I graduated from college and entered the… More

Fishing

Members of the monitoring show off adult salmon captured at a monitoring station. From left to right, Kevin Vandenack holds a steelhead, Katherine Stonecypher holds a coho salmon, and Bryan Crouch holds a Chinook salmon. Credit: Katherine Stonecypher/Cal Poly Humboldt

Can Habitat Restoration Help Salmon Recover? Prairie Creek Offers Clues

By fisheries.noaa.gov, fisheries.noaa.gov. This story is part 2 of a 2-part series. Read part 1. When… More

Coastal NewsEnvironment

Prairie Creek project partners gather at the restoration site before construction begins. Credit: Michael Weir/CalTrout

Restoring California’s Prairie Creek Supports Salmon Recovery and Local Community

By fisheries.noaa.gov, fisheries.noaa.gov. This story is part 1 of a 2-part series. Read part 1.… More

Coastal NewsEnvironment

A researcher in a U.S. Coast Guard helicopter first spotted the entangled humpback anchored to the bottom about 20 miles off the Oregon Coast. The whale’s white pectoral flipper extends underwater to the lower left, while white baleen outlines its open lower jaw at bottom right. The entanglement left the whale’s mouth stretched permanently open, making it unable to feed. Photo collected in partnership with Oregon Coast Aquarium, Oregon State University Marine Mammal Institute and Cascadia Research Collective.

Fishing Vessel Joins Trained Team to Free Injured Humpback Whale 20 Miles off Oregon Coast

By fisheries.noaa.gov, fisheries.noaa.gov. An Oregon team joined by experts from Washington and a local fisherman… More

Coastal NewsOcean Awareness

NOAA's GOES West satellite captured this image of three tropical cyclones — Hurricanes Fausto and Genevieve and Typhoon Dolphin — swirling simultaneously in the Pacific Ocean. The image was taken on Tuesday, July 27, at 3:30 PM PDT/ 22:30 UTC. None of the three tropical cyclones made landfall in the United States. Fausto contributed to high surf conditions in Hawaii, and Genevieve also brought high surf to southern California. Typhoon Dolphin continued its track west toward Asia. (Image credit: NOAA Satellites)

Pacific Hurricanes Fausto and Genevieve actually had origins near Africa

By noaa.gov, noaa.gov. It may be surprising, but two of the hurricanes that swirled in… More

Extreme WeatherHurricanesWeather & Tides

Pacific capelin with unknown maturity. Scientists make microscopic observations to determine if capelin spawn only once or if they are capable of spawning over multiple years. Credit: NOAA Fisheries

NOAA Scientists Discover Repeat Spawning in Pacific Capelin

By fisheries.noaa.gov, fisheries.noaa.gov. For certain fish species, like Pacific salmon, reproduction is a once-in-a-lifetime event, known… More

Ocean AwarenessOcean Science

Enforcement officer inventories shark fins. Credit: NOAA Fisheries

NOAA Fisheries Enforcement Officers Deploy for High Seas Patrols Combatting Illegal, Unreported, and Unregulated Fishing

By fisheries.noaa.gov, fisheries.noaa.gov. Enforcement officers from NOAA Fisheries’ Office of Law Enforcement have successfully wrapped up deployments… More

Fishing

Your Privacy Choices