Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

68°
H -°
L 66°
WSW
8mph
Low tide
3:40 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, September 14, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 30m at 3:40 am (0.0 ft)
Next high tide : 10:24 am (3.5 ft)
Sunset today : 6:57 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Crescent (14% 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 1868

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:353.68:013.11:02-0.11:570.06:224:45Full Moon1Sun
2Mon8:163.68:443.01:38-0.12:330.06:234:44Waning Gibbous2Mon
3Tue9:003.69:313.02:18-0.13:110.16:244:43Waning Gibbous3Tue
4Wed9:483.510:242.93:010.03:570.26:254:42Waning Gibbous4Wed
5Thu10:423.311:222.83:490.14:580.36:274:41Waning Gibbous5Thu
6Fri11:423.24:470.36:320.36:284:39Third Quarter6Fri
7Sat12:242.812:453.16:010.47:490.36:294:38Third Quarter7Sat
8Sun1:292.91:523.17:400.38:520.26:304:37Third Quarter8Sun
9Mon2:373.13:023.19:070.29:460.06:314:36Waning Crescent9Mon
10Tue3:423.34:063.110:120.010:34-0.16:334:35Waning Crescent10Tue
11Wed4:393.65:023.211:07-0.111:17-0.36:344:34Waning Crescent11Wed
12Thu5:313.85:523.311:58-0.311:58-0.36:354:33New Moon12Thu
13Fri6:183.96:393.312:45-0.36:364:32New Moon13Fri
14Sat7:043.97:253.212:36-0.31:30-0.36:374:32New Moon14Sat
15Sun7:493.88:093.11:13-0.32:11-0.36:394:31New Moon15Sun
16Mon8:323.78:533.01:47-0.22:49-0.16:404:30Waxing Crescent16Mon
17Tue9:153.49:382.82:210.03:260.16:414:29Waxing Crescent17Tue
18Wed9:593.110:252.62:560.24:040.36:424:28Waxing Crescent18Wed
19Thu10:452.911:152.43:350.44:530.46:434:28Waxing Crescent19Thu
20Fri11:352.64:210.66:030.66:454:27First Quarter20Fri
21Sat12:092.312:272.55:200.87:100.66:464:26First Quarter21Sat
22Sun1:042.31:222.46:590.88:050.66:474:26First Quarter22Sun
23Mon2:012.32:222.38:330.88:530.56:484:25First Quarter23Mon
24Tue3:012.43:222.49:330.69:350.46:494:25Waxing Gibbous24Tue
25Wed3:522.64:112.510:230.510:110.36:504:24Waxing Gibbous25Wed
26Thu4:332.84:542.611:070.310:450.16:514:24Waxing Gibbous26Thu
27Fri5:113.15:342.711:480.111:19-0.16:524:23Waxing Gibbous27Fri
28Sat5:503.36:142.912:27-0.16:544:23Full Moon28Sat
29Sun6:303.56:573.01:07-0.26:554:23Full Moon29Sun
30Mon7:133.77:413.012:36-0.31:46-0.36:564:22Full Moon30Mon
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 spring phase. Tonight's moon is 14% 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 (14% 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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