Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

64°
H 64°
L 57°
NE
19mph
High tide
5:44 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 12:04 am (0.5 ft)
Next high tide : in 2h 49m at 5:44 pm (2.9 ft)
Sunset today : 6:43 pm
Sunrise tomorrow : 6:34 am
Moon phase : Waxing Gibbous (83% 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 1854

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:303.34:563.211:010.011:09-0.16:214:46Waxing Gibbous1Wed
2Thu5:203.65:433.211:50-0.111:46-0.26:224:45Waxing Gibbous2Thu
3Fri6:063.76:273.212:36-0.16:234:44Full Moon3Fri
4Sat6:483.87:093.112:18-0.21:17-0.16:254:42Full Moon4Sat
5Sun7:283.77:503.012:49-0.21:55-0.16:264:41Full Moon5Sun
6Mon8:073.68:312.91:19-0.12:290.16:274:40Full Moon6Mon
7Tue8:443.49:122.71:520.03:010.26:284:39Waning Gibbous7Tue
8Wed9:223.19:542.52:260.23:330.46:294:38Waning Gibbous8Wed
9Thu10:012.910:412.33:040.44:140.66:314:37Waning Gibbous9Thu
10Fri10:462.711:342.23:460.65:240.76:324:36Waning Gibbous10Fri
11Sat11:372.54:360.76:590.86:334:35Third Quarter11Sat
12Sun12:302.112:332.45:390.98:010.86:344:34Third Quarter12Sun
13Mon1:292.21:332.47:050.98:520.76:354:33Third Quarter13Mon
14Tue2:302.32:362.48:390.89:330.66:374:32Third Quarter14Tue
15Wed3:262.53:342.59:420.610:060.46:384:31Waning Crescent15Wed
16Thu4:122.84:232.610:310.410:350.26:394:30Waning Crescent16Thu
17Fri4:523.15:062.811:150.111:040.06:404:30Waning Crescent17Fri
18Sat5:323.45:492.911:58-0.111:38-0.26:414:29New Moon18Sat
19Sun6:133.76:333.012:40-0.26:434:28New Moon19Sun
20Mon6:573.97:193.112:16-0.31:24-0.36:444:27New Moon20Mon
21Tue7:433.98:073.112:58-0.42:09-0.46:454:27New Moon21Tue
22Wed8:313.98:573.01:43-0.42:56-0.36:464:26Waxing Crescent22Wed
23Thu9:233.89:502.92:31-0.33:47-0.16:474:26Waxing Crescent23Thu
24Fri10:193.610:492.83:22-0.14:520.06:484:25Waxing Crescent24Fri
25Sat11:203.311:522.84:220.16:080.16:504:24First Quarter25Sat
26Sun12:243.15:490.27:160.16:514:24First Quarter26Sun
27Mon12:582.81:292.97:340.38:150.16:524:24First Quarter27Mon
28Tue2:052.92:352.88:510.29:090.16:534:23First Quarter28Tue
29Wed3:113.03:382.79:550.29:560.06:544:23Waxing Gibbous29Wed
30Thu4:103.24:332.710:500.110:370.06:554:22Waxing Gibbous30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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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 spring phase. Tonight's moon is 83% 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 (83% 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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