Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

62°
H 66°
L 58°
NE
13mph
High tide
2:36 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:44 pm (1.0 ft)
Next high tide : in 6h 26m at 2:36 pm (2.5 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
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 - Dec 1859

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:062.45:100.76:360.66:564:22First Quarter1Thu
2Fri12:422.212:542.36:370.87:230.56:574:22First Quarter2Fri
3Sat1:322.31:472.28:100.88:050.56:584:22First Quarter3Sat
4Sun2:252.42:452.29:160.68:460.46:594:21Waxing Gibbous4Sun
5Mon3:182.63:432.210:100.59:290.37:004:21Waxing Gibbous5Mon
6Tue4:072.94:332.310:560.310:120.17:014:21Waxing Gibbous6Tue
7Wed4:513.15:192.511:400.110:540.07:024:21Waxing Gibbous7Wed
8Thu5:353.36:032.612:23-0.17:034:21Full Moon8Thu
9Fri6:203.56:482.81:05-0.27:044:21Full Moon9Fri
10Sat7:073.77:352.912:24-0.31:48-0.37:044:21Full Moon10Sat
11Sun7:553.78:242.91:12-0.42:31-0.37:054:21Full Moon11Sun
12Mon8:443.69:143.02:01-0.43:15-0.37:064:21Waning Gibbous12Mon
13Tue9:353.510:083.02:51-0.44:03-0.27:074:22Waning Gibbous13Tue
14Wed10:293.311:063.03:46-0.24:57-0.17:084:22Waning Gibbous14Wed
15Thu11:253.14:520.05:57-0.17:084:22Third Quarter15Thu
16Fri12:063.012:242.86:200.16:550.07:094:22Third Quarter16Fri
17Sat1:073.11:242.67:460.27:520.07:104:23Third Quarter17Sat
18Sun2:103.12:302.49:000.28:480.07:104:23Waning Crescent18Sun
19Mon3:153.23:372.310:040.19:430.07:114:23Waning Crescent19Mon
20Tue4:163.24:372.410:590.010:340.07:114:24Waning Crescent20Tue
21Wed5:103.35:292.511:480.011:21-0.17:124:24Waning Crescent21Wed
22Thu5:593.36:172.512:33-0.17:134:25New Moon22Thu
23Fri6:443.37:012.612:04-0.11:15-0.17:134:25New Moon23Fri
24Sat7:273.27:442.612:45-0.11:52-0.17:134:26New Moon24Sat
25Sun8:073.18:252.61:22-0.12:27-0.17:144:26New Moon25Sun
26Mon8:453.09:042.51:570.02:590.07:144:27Waxing Crescent26Mon
27Tue9:212.99:432.42:320.13:290.07:154:28Waxing Crescent27Tue
28Wed9:572.710:222.33:080.23:590.17:154:28Waxing Crescent28Wed
29Thu10:342.511:032.33:480.34:320.27:154:29Waxing Crescent29Thu
30Fri11:142.311:452.34:340.55:090.37:154:30First Quarter30Fri
31Sat11:572.25:310.65:510.37:154:31First Quarter31Sat
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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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

Sablefish farmed in net pens at NOAA's Northwest Fisheries Science Center. Credit: Megan Ewald for NOAA Fisheries.

Managing Genetic Risk in Offshore Aquaculture

By fisheries.noaa.gov, fisheries.noaa.gov. Aquaculture can sustainably produce seafood to complement wild-caught fisheries. However, like all… More

FishingFoodScience

Deep-sea sponges and other invertebrates in a collection basket during a bottom trawl survey. Credit: NOAA Fisheries

Nine Species of Deep-Sea Sponges Discovered in Alaska

By fisheries.noaa.gov, fisheries.noaa.gov. Scientists have discovered nine new species of sponges in the Gulf of… More

Ocean Science

Sugar Creek flows over a dam initially created with beaver dam analogues to help improve habitat for coho salmon and other wildlife. Photo courtesy of Scott River Watershed Council.

Start-Up Beaver Dams Transform Parched California Creeks into Salmon Havens, New Research Finds

By fisheries.noaa.gov, fisheries.noaa.gov. Battered by early gold mining and diminished by logging and diversions,the lower… More

Coastal News

Image Credits: Flickr.com.

Concrete Ships Hiding in Plain Sight: The Forgotten Breakwaters of America's Harbors

By Jordan Hanssen, best4boats. There's a good chance a concrete ship is lurking in your… More

Maritime History

Image Credits: Flickr.com.

Is Offshore Construction Noise Stressing New England's Lobsters? WHOI Scientists Want to Know

By Kiran Johnson, whoi.edu. As offshore wind farms multiply along the New England coast, a… More

Coastal LifeOcean AwarenessOcean Science

The future of fisheries-independent surveys will include traditional capture-based surveys as well as advanced technology such as acoustic, optical, and molecular tools deployed from survey vessels, uncrewed vehicles, and moored to the seafloor. Credit: NOAA Fisheries/Su Kim

Charting the Future of Fisheries-Independent Surveys

By fisheries.noaa.gov, fisheries.noaa.gov. Fisheries-independent surveys operate on dedicated survey vessels and are the foundation of… More

Ocean Science

Coastally-trapped Kelvin waves, a signature of El Niño, traveled north along the West Coast during the 1997/1998 El Niño, as shown in a map of sea surface height anomalies. Darker reds show sea levels higher than normal, while darker blues show heights below normal. Scientists are now watching for similar waves to move up the West Coast this fall. Credit: Dillon Amaya/North Carolina State University

Ocean Indicators We’re Tracking for El Niño’s Arrival on the West Coast

By fisheries.noaa.gov, fisheries.noaa.gov. Has El Niño reached the West Coast? You might think it has.… More

Coastal NewsExtreme WeatherOcean ScienceWeather & Tides

Docked fishing boats at Yaquina Bay, Newport, Oregon. Credit: iStock

Advancing Agency-Level Reforms to Restore American Seafood Competitiveness

By fisheries.noaa.gov, fisheries.noaa.gov. Over the past year, I have met with fishermen, processors, coastal community… More

Coastal NewsFishingFood

Image Credits: Wikimedia commons.

Coral IVF: How Scientists Are Breeding Heat-Resistant Reefs for Florida's Future

By Dawn Anderson, best4boats.com. The reefs that protect South Florida's coastlines, harbors, and marinas are… More

Ocean Science

Your Privacy Choices