Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

59°
H -°
L 58°
SE
6mph
High tide
11:21 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 4:40 am (0.4 ft)
Next high tide : in 18m at 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 - Nov 1864

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:053.58:252.91:240.02:200.16:224:45Waxing Crescent1Tue
2Wed8:463.49:092.92:010.12:550.16:234:44Waxing Crescent2Wed
3Thu9:313.39:572.82:410.13:350.26:244:43Waxing Crescent3Thu
4Fri10:213.210:512.83:260.24:240.36:254:42Waxing Crescent4Fri
5Sat11:173.111:502.84:190.35:260.36:274:41First Quarter5Sat
6Sun12:173.05:240.46:440.36:284:39First Quarter6Sun
7Mon12:532.91:203.06:520.57:560.26:294:38First Quarter7Mon
8Tue1:583.02:273.08:360.38:570.16:304:37Waxing Gibbous8Tue
9Wed3:043.33:343.19:480.19:51-0.16:314:36Waxing Gibbous9Wed
10Thu4:073.54:343.210:46-0.110:39-0.36:334:35Waxing Gibbous10Thu
11Fri5:023.85:283.311:39-0.311:24-0.46:344:34Waxing Gibbous11Fri
12Sat5:524.06:183.412:29-0.46:354:33Full Moon12Sat
13Sun6:414.07:073.412:08-0.41:17-0.46:364:33Full Moon13Sun
14Mon7:294.07:553.312:52-0.42:03-0.46:374:32Full Moon14Mon
15Tue8:153.88:423.21:34-0.32:47-0.26:394:31Waning Gibbous15Tue
16Wed9:013.69:293.02:14-0.23:300.06:404:30Waning Gibbous16Wed
17Thu9:483.310:192.82:540.04:150.26:414:29Waning Gibbous17Thu
18Fri10:363.011:122.63:350.35:090.36:424:28Waning Gibbous18Fri
19Sat11:262.74:220.56:110.56:434:28Third Quarter19Sat
20Sun12:072.512:182.55:230.77:080.66:444:27Third Quarter20Sun
21Mon1:032.41:112.46:590.87:590.66:464:26Third Quarter21Mon
22Tue2:002.42:092.38:170.78:450.66:474:26Third Quarter22Tue
23Wed2:582.53:102.39:180.79:270.56:484:25Waning Crescent23Wed
24Thu3:502.74:032.310:100.510:040.46:494:25Waning Crescent24Thu
25Fri4:332.84:462.410:550.310:380.36:504:24Waning Crescent25Fri
26Sat5:113.05:242.511:370.211:110.16:514:24Waning Crescent26Sat
27Sun5:473.26:022.712:170.06:524:23New Moon27Sun
28Mon6:243.46:422.812:56-0.16:534:23New Moon28Mon
29Tue7:043.57:232.912:24-0.11:33-0.26:554:23New Moon29Tue
30Wed7:463.58:072.91:04-0.22:09-0.26:564:22New Moon30Wed
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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