Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

70°
H 78°
L 65°
SW
7mph
Low tide
11:36 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 43m at 11:36 am (0.7 ft)
Next high tide : 6:20 pm (2.9 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waxing Gibbous (88% 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 - Feb 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:242.310:562.53:590.14:080.06:575:02Waning Gibbous1Fri
2Sat11:042.111:382.44:430.34:460.26:565:03Third Quarter2Sat
3Sun11:502.05:350.45:310.26:555:04Third Quarter3Sun
4Mon12:262.312:431.96:410.56:260.36:545:05Third Quarter4Mon
5Tue1:222.41:441.88:230.57:290.36:535:07Third Quarter5Tue
6Wed2:302.42:571.99:450.48:430.26:525:08Waning Crescent6Wed
7Thu3:432.64:072.210:400.110:000.06:515:09Waning Crescent7Thu
8Fri4:442.95:052.511:27-0.111:03-0.36:505:10Waning Crescent8Fri
9Sat5:363.25:562.812:10-0.46:495:12Waning Crescent9Sat
10Sun6:243.56:453.212:51-0.76:485:13New Moon10Sun
11Mon7:113.67:333.412:50-0.81:30-0.86:465:14New Moon11Mon
12Tue7:583.68:213.61:41-0.92:09-0.96:455:15New Moon12Tue
13Wed8:463.59:093.62:30-0.92:46-0.96:445:17Waxing Crescent13Wed
14Thu9:343.39:593.63:20-0.73:25-0.86:435:18Waxing Crescent14Thu
15Fri10:253.010:533.44:15-0.54:07-0.66:415:19Waxing Crescent15Fri
16Sat11:202.711:513.15:25-0.24:55-0.46:405:20First Quarter16Sat
17Sun12:182.46:460.05:53-0.16:395:22First Quarter17Sun
18Mon12:532.91:222.28:020.27:140.16:375:23First Quarter18Mon
19Tue2:052.72:342.19:130.28:500.26:365:24First Quarter19Tue
20Wed3:222.63:462.210:140.210:020.16:345:25Waxing Gibbous20Wed
21Thu4:282.64:462.311:050.110:580.16:335:26Waxing Gibbous21Thu
22Fri5:202.75:352.511:490.011:430.06:325:28Waxing Gibbous22Fri
23Sat6:042.86:192.712:27-0.16:305:29Waxing Gibbous23Sat
24Sun6:422.86:582.812:23-0.112:59-0.26:295:30Full Moon24Sun
25Mon7:162.87:342.912:58-0.21:28-0.36:275:31Full Moon25Mon
26Tue7:472.88:072.91:30-0.21:52-0.36:265:32Full Moon26Tue
27Wed8:172.88:382.92:01-0.22:12-0.36:245:33Full Moon27Wed
28Thu8:472.79:092.82:30-0.22:34-0.26:235:35Waning Gibbous28Thu
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 88% 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 (88% 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

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