Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

66°
H 66°
L 59°
E
6mph
Low tide
5:02 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 24m at 5:02 pm (0.5 ft)
Next high tide : 11:21 pm (2.7 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:27 am
Moon phase : Waxing Crescent (21% 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 - Sep 1865

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:112.53:503.19:070.510:350.45:166:23Waxing Gibbous1Fri
2Sat4:142.84:463.410:160.311:180.25:176:21Waxing Gibbous2Sat
3Sun5:083.25:363.611:120.011:58-0.15:186:20Waxing Gibbous3Sun
4Mon5:573.56:243.812:04-0.25:196:18Full Moon4Mon
5Tue6:463.87:123.912:38-0.312:56-0.45:206:16Full Moon5Tue
6Wed7:344.08:003.91:19-0.51:47-0.45:216:15Full Moon6Wed
7Thu8:234.18:493.81:59-0.52:37-0.45:226:13Waning Gibbous7Thu
8Fri9:134.19:403.62:41-0.53:30-0.25:236:11Waning Gibbous8Fri
9Sat10:064.010:343.33:24-0.34:310.05:246:10Waning Gibbous9Sat
10Sun11:033.811:323.14:12-0.15:490.25:256:08Third Quarter10Sun
11Mon12:043.55:100.17:060.45:266:06Third Quarter11Mon
12Tue12:342.91:093.36:300.38:160.55:276:04Third Quarter12Tue
13Wed1:402.82:203.18:000.59:190.55:286:03Third Quarter13Wed
14Thu2:492.83:303.19:140.510:140.45:296:01Waning Crescent14Thu
15Fri3:542.94:293.110:140.411:000.45:305:59Waning Crescent15Fri
16Sat4:493.05:183.111:040.411:410.35:315:58Waning Crescent16Sat
17Sun5:373.26:003.211:460.35:325:56Waning Crescent17Sun
18Mon6:193.36:383.212:160.212:240.25:335:54New Moon18Mon
19Tue6:573.47:123.212:470.212:590.25:345:52New Moon19Tue
20Wed7:333.47:453.11:130.11:300.25:355:51New Moon20Wed
21Thu8:063.48:173.11:350.12:010.25:365:49New Moon21Thu
22Fri8:383.38:492.91:590.22:310.35:375:47Waxing Crescent22Fri
23Sat9:113.29:242.82:270.33:040.45:385:46Waxing Crescent23Sat
24Sun9:463.010:032.63:000.43:400.55:395:44Waxing Crescent24Sun
25Mon10:262.910:472.53:360.54:220.75:405:42Waxing Crescent25Mon
26Tue11:122.811:382.44:180.65:150.85:415:40First Quarter26Tue
27Wed12:052.85:090.76:250.85:425:39First Quarter27Wed
28Thu12:342.41:042.86:110.87:570.85:445:37First Quarter28Thu
29Fri1:352.52:092.97:230.79:060.65:455:35First Quarter29Fri
30Sat2:422.73:173.18:480.59:570.35:465:34Waxing Gibbous30Sat
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.
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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 transitional phase. Tonight's moon is 21% 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 (21% 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

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