Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

66°
H -°
L 65°
WSW
7mph
High tide
12:06 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 5:19 am (0.7 ft)
Next high tide (tomorrow) : in 1h 50m at 12:06 am (2.4 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:28 am
Moon phase : Waxing Crescent (30% 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 1862

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:082.812:483.45:420.37:450.55:166:23First Quarter1Mon
2Tue1:122.71:563.36:580.48:590.55:176:22First Quarter2Tue
3Wed2:232.83:103.48:380.410:010.35:186:20Waxing Gibbous3Wed
4Thu3:362.94:173.59:590.210:530.25:196:18Waxing Gibbous4Thu
5Fri4:403.25:123.611:000.111:400.05:206:17Waxing Gibbous5Fri
6Sat5:333.46:023.611:53-0.15:216:15Full Moon6Sat
7Sun6:223.66:473.712:22-0.112:42-0.15:226:13Full Moon7Sun
8Mon7:083.77:303.61:00-0.21:27-0.15:236:12Full Moon8Mon
9Tue7:513.78:123.41:33-0.22:070.05:246:10Full Moon9Tue
10Wed8:323.78:523.22:02-0.12:430.15:256:08Waning Gibbous10Wed
11Thu9:123.59:323.02:290.03:160.35:266:07Waning Gibbous11Thu
12Fri9:503.310:132.82:580.23:490.55:276:05Waning Gibbous12Fri
13Sat10:303.010:582.63:310.44:280.75:286:03Waning Gibbous13Sat
14Sun11:132.811:462.44:100.65:290.95:296:01Third Quarter14Sun
15Mon12:022.74:570.77:151.05:306:00Third Quarter15Mon
16Tue12:392.312:582.65:550.98:271.05:315:58Third Quarter16Tue
17Wed1:402.22:052.57:050.99:250.95:325:56Third Quarter17Wed
18Thu2:502.33:202.68:330.810:120.75:335:55Waning Crescent18Thu
19Fri3:512.54:142.89:460.710:510.65:345:53Waning Crescent19Fri
20Sat4:382.74:563.010:380.511:250.45:355:51Waning Crescent20Sat
21Sun5:183.05:343.211:230.311:540.25:365:50Waning Crescent21Sun
22Mon5:573.36:133.312:060.15:375:48New Moon22Mon
23Tue6:373.66:533.412:230.012:48-0.15:385:46New Moon23Tue
24Wed7:183.87:363.412:53-0.11:31-0.25:395:44New Moon24Wed
25Thu8:013.98:213.41:27-0.22:13-0.25:405:43Waxing Crescent25Thu
26Fri8:473.99:083.32:05-0.22:57-0.15:415:41Waxing Crescent26Fri
27Sat9:363.99:593.12:46-0.23:460.15:425:39Waxing Crescent27Sat
28Sun10:303.710:563.03:320.04:480.35:435:38Waxing Crescent28Sun
29Mon11:313.511:582.94:250.26:170.45:445:36First Quarter29Mon
30Tue12:363.35:350.37:370.45:455:34First Quarter30Tue
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 transitional phase. Tonight's moon is 30% 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 (30% 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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