Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

68°
H 77°
L 65°
WSW
6mph
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 5h 14m 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 - Apr 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:112.311:322.84:490.24:410.26:307:10Waning Gibbous1Mon
2Tue11:592.35:330.35:270.36:287:11Waning Gibbous2Tue
3Wed12:232.712:532.26:290.46:230.46:277:12Third Quarter3Wed
4Thu1:212.71:542.37:420.47:320.46:257:13Third Quarter4Thu
5Fri2:252.73:012.49:100.38:550.36:237:14Third Quarter5Fri
6Sat3:362.84:122.710:200.110:320.16:227:15Waning Crescent6Sat
7Sun4:452.95:163.111:13-0.111:41-0.26:207:16Waning Crescent7Sun
8Mon5:463.16:113.512:00-0.46:187:17Waning Crescent8Mon
9Tue6:393.37:023.812:38-0.412:44-0.66:177:18New Moon9Tue
10Wed7:303.47:524.01:32-0.71:27-0.76:157:20New Moon10Wed
11Thu8:203.58:414.12:23-0.82:11-0.76:137:21New Moon11Thu
12Fri9:093.49:304.03:13-0.82:54-0.76:127:22New Moon12Fri
13Sat9:593.210:193.84:02-0.63:37-0.56:107:23Waxing Crescent13Sat
14Sun10:493.011:113.54:53-0.44:21-0.36:097:24Waxing Crescent14Sun
15Mon11:432.85:51-0.15:080.06:077:25Waxing Crescent15Mon
16Tue12:073.212:402.66:580.26:070.36:067:26First Quarter16Tue
17Wed1:072.91:402.58:040.37:380.56:047:27First Quarter17Wed
18Thu2:092.62:442.49:050.49:040.66:037:28First Quarter18Thu
19Fri3:162.43:492.410:000.510:110.66:017:29First Quarter19Fri
20Sat4:212.44:502.610:480.411:060.55:597:30Waxing Gibbous20Sat
21Sun5:162.45:392.711:280.411:520.45:587:31Waxing Gibbous21Sun
22Mon6:012.46:212.912:020.35:577:32Waxing Gibbous22Mon
23Tue6:392.56:583.012:330.312:320.25:557:33Waxing Gibbous23Tue
24Wed7:132.67:313.21:120.11:000.15:547:34Full Moon24Wed
25Thu7:462.68:033.21:490.01:280.15:527:35Full Moon25Thu
26Fri8:192.78:363.32:250.01:570.05:517:37Full Moon26Fri
27Sat8:542.79:113.32:590.02:300.05:497:38Full Moon27Sat
28Sun9:312.69:483.23:300.03:040.15:487:39Waning Gibbous28Sun
29Mon10:112.610:293.14:020.13:420.15:477:40Waning Gibbous29Mon
30Tue10:552.611:153.04:370.24:230.25:457:41Waning Gibbous30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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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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