Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

58°
H 70°
L 65°
SW
2mph
High tide
11:48 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 : 5:45 pm (0.7 ft)
Next high tide : in 7h 00m at 11:48 am (3.0 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

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 - Jun 1864

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:452.95:143.610:410.011:570.04:197:16Waning Crescent1Wed
2Thu5:383.06:043.711:28-0.14:187:17New Moon2Thu
3Fri6:283.06:523.712:45-0.112:12-0.14:187:18New Moon3Fri
4Sat7:163.07:363.61:30-0.112:540.04:187:18New Moon4Sat
5Sun8:013.08:193.52:120.01:340.04:177:19New Moon5Sun
6Mon8:453.08:593.32:500.02:110.14:177:20Waxing Crescent6Mon
7Tue9:292.99:383.13:260.12:490.34:177:20Waxing Crescent7Tue
8Wed10:132.810:172.94:000.23:280.44:167:21Waxing Crescent8Wed
9Thu10:582.710:572.84:350.44:110.64:167:21Waxing Crescent9Thu
10Fri11:432.611:392.65:130.55:030.74:167:22First Quarter10Fri
11Sat12:262.65:530.56:050.84:167:22First Quarter11Sat
12Sun12:222.51:112.66:350.67:170.84:167:23First Quarter12Sun
13Mon1:092.41:592.77:180.68:320.84:167:23First Quarter13Mon
14Tue2:022.32:532.88:060.59:380.64:167:24Waxing Gibbous14Tue
15Wed3:042.33:483.08:580.410:320.54:167:24Waxing Gibbous15Wed
16Thu4:042.44:393.29:510.311:200.34:167:25Waxing Gibbous16Thu
17Fri4:582.65:273.510:410.24:167:25Waxing Gibbous17Fri
18Sat5:482.86:153.712:070.111:30 AM0.04:167:25Full Moon18Sat
19Sun6:373.07:033.912:53-0.112:20-0.14:167:25Full Moon19Sun
20Mon7:273.27:513.91:37-0.21:10-0.24:177:26Full Moon20Mon
21Tue8:163.38:403.92:21-0.32:02-0.34:177:26Waning Gibbous21Tue
22Wed9:073.49:313.83:04-0.32:54-0.24:177:26Waning Gibbous22Wed
23Thu10:003.410:233.63:49-0.33:49-0.14:177:26Waning Gibbous23Thu
24Fri10:553.411:183.44:38-0.24:570.14:187:26Waning Gibbous24Fri
25Sat11:533.45:32-0.16:230.24:187:26Third Quarter25Sat
26Sun12:153.212:513.46:280.07:410.34:187:27Third Quarter26Sun
27Mon1:142.91:533.47:250.18:510.44:197:27Third Quarter27Mon
28Tue2:162.82:583.48:240.19:550.34:197:27Waning Crescent28Tue
29Wed3:232.74:023.49:250.210:510.34:207:26Waning Crescent29Wed
30Thu4:262.74:593.410:200.211:420.24:207:26Waning Crescent30Thu
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.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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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