Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

69°
H -°
L 66°
SSE
8mph
High tide
9:19 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 12, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 3:14 am (-0.1 ft)
Next high tide : in 3h 05m at 9:19 pm (3.4 ft)
Sunset today : 7:01 pm
Sunrise tomorrow : 6:24 am
Moon phase : New Moon (3% 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 - Nov 1871

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:323.010:082.52:440.33:390.56:214:46Waning Gibbous1Wed
2Thu10:112.810:532.33:220.54:210.66:224:45Waning Gibbous2Thu
3Fri10:562.611:452.24:050.75:260.86:234:44Third Quarter3Fri
4Sat11:482.54:580.87:200.86:244:43Third Quarter4Sat
5Sun12:412.212:462.56:030.98:220.86:264:41Third Quarter5Sun
6Mon1:402.21:482.57:230.89:110.66:274:40Third Quarter6Mon
7Tue2:422.42:532.68:510.79:500.56:284:39Waning Crescent7Tue
8Wed3:392.73:532.89:550.510:230.26:294:38Waning Crescent8Wed
9Thu4:283.14:433.010:460.210:550.06:304:37Waning Crescent9Thu
10Fri5:133.45:303.111:32-0.111:29-0.26:324:36Waning Crescent10Fri
11Sat5:573.86:173.312:18-0.36:334:35New Moon11Sat
12Sun6:424.07:043.312:08-0.41:06-0.56:344:34New Moon12Sun
13Mon7:294.17:533.312:49-0.51:53-0.56:354:33New Moon13Mon
14Tue8:184.18:433.21:34-0.52:42-0.46:374:32Waxing Crescent14Tue
15Wed9:104.09:363.12:20-0.43:35-0.36:384:31Waxing Crescent15Wed
16Thu10:053.810:343.03:10-0.24:37-0.16:394:31Waxing Crescent16Thu
17Fri11:053.511:362.84:060.05:530.16:404:30First Quarter17Fri
18Sat12:103.25:250.27:050.26:414:29First Quarter18Sat
19Sun12:422.81:163.07:140.38:070.26:424:28First Quarter19Sun
20Mon1:492.82:232.98:330.39:030.26:444:28First Quarter20Mon
21Tue2:572.93:272.89:390.39:520.16:454:27Waxing Gibbous21Tue
22Wed3:583.04:232.810:340.210:340.16:464:26Waxing Gibbous22Wed
23Thu4:493.25:102.811:220.111:090.16:474:26Waxing Gibbous23Thu
24Fri5:343.35:532.812:040.16:484:25Waxing Gibbous24Fri
25Sat6:143.46:322.812:420.16:494:25Full Moon25Sat
26Sun6:513.37:102.812:060.01:170.06:514:24Full Moon26Sun
27Mon7:253.37:472.712:350.01:500.06:524:24Full Moon27Mon
28Tue7:583.28:242.61:080.02:200.16:534:23Full Moon28Tue
29Wed8:313.19:012.51:430.12:500.26:544:23Waning Gibbous29Wed
30Thu9:052.99:402.42:200.23:220.36:554:22Waning Gibbous30Thu
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 spring phase. Tonight's moon is 3% 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 New Moon (3% 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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