Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

69°
H 73°
L 66°
SSE
8mph
High tide
9:44 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, September 13, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 3:50 pm (0.1 ft)
Next high tide : in 5h 46m at 9:44 am (3.7 ft)
Sunset today : 6:59 pm
Sunrise tomorrow : 6:25 am
Moon phase : Waxing Crescent (7% 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 1870

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:512.72:292.98:310.59:110.46:214:46First Quarter1Tue
2Wed2:592.73:332.89:350.510:000.46:224:45Waxing Gibbous2Wed
3Thu4:002.94:272.810:290.410:410.36:244:43Waxing Gibbous3Thu
4Fri4:503.05:122.911:140.311:150.26:254:42Waxing Gibbous4Fri
5Sat5:323.25:512.911:530.311:430.26:264:41Waxing Gibbous5Sat
6Sun6:103.36:272.912:290.26:274:40Full Moon6Sun
7Mon6:443.37:022.912:090.11:030.16:284:39Full Moon7Mon
8Tue7:153.37:362.812:350.11:350.16:304:38Full Moon8Tue
9Wed7:453.38:092.81:040.12:050.16:314:37Full Moon9Wed
10Thu8:173.28:452.71:360.12:340.26:324:36Waning Gibbous10Thu
11Fri8:503.19:232.52:110.23:040.36:334:35Waning Gibbous11Fri
12Sat9:283.010:052.42:480.33:390.56:344:34Waning Gibbous12Sat
13Sun10:112.910:532.33:280.44:220.66:364:33Waning Gibbous13Sun
14Mon11:012.811:472.34:140.55:180.66:374:32Third Quarter14Mon
15Tue11:572.75:100.66:370.66:384:31Third Quarter15Tue
16Wed12:452.412:572.76:190.67:540.56:394:30Third Quarter16Wed
17Thu1:462.62:012.87:400.58:510.36:404:30Third Quarter17Thu
18Fri2:502.83:082.99:060.39:390.16:424:29Waning Crescent18Fri
19Sat3:513.24:103.110:130.110:24-0.26:434:28Waning Crescent19Sat
20Sun4:453.65:063.211:08-0.211:07-0.46:444:27Waning Crescent20Sun
21Mon5:363.95:583.412:01-0.56:454:27New Moon21Mon
22Tue6:254.26:493.412:53-0.66:464:26New Moon22Tue
23Wed7:154.37:403.412:37-0.61:44-0.76:474:25New Moon23Wed
24Thu8:064.28:313.31:24-0.62:35-0.66:494:25Waxing Crescent24Thu
25Fri8:574.09:233.22:12-0.53:26-0.46:504:24Waxing Crescent25Fri
26Sat9:513.810:183.03:01-0.34:23-0.26:514:24Waxing Crescent26Sat
27Sun10:483.411:172.83:540.05:280.06:524:23Waxing Crescent27Sun
28Mon11:483.15:060.26:350.26:534:23First Quarter28Mon
29Tue12:202.712:502.86:460.47:350.36:544:23First Quarter29Tue
30Wed1:232.61:522.68:020.58:290.36:554:22First Quarter30Wed
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 spring phase. Tonight's moon is 7% 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 Crescent (7% 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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