Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

71°
H 72°
L 66°
SSW
9mph
Low tide
3:50 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, September 13, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 33m at 3:50 pm (0.1 ft)
Next high tide : 9:59 pm (3.2 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

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 - Dec 1869

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:243.85:463.211:55-0.411:45-0.56:564:22Waning Crescent1Wed
2Thu6:144.06:363.212:45-0.56:574:22New Moon2Thu
3Fri7:034.07:263.212:29-0.51:34-0.66:584:22New Moon3Fri
4Sat7:513.98:143.11:13-0.52:20-0.56:594:21New Moon4Sat
5Sun8:393.79:023.01:56-0.43:04-0.37:004:21Waxing Crescent5Sun
6Mon9:263.59:512.82:37-0.23:47-0.17:014:21Waxing Crescent6Mon
7Tue10:153.210:422.63:180.04:350.17:024:21Waxing Crescent7Tue
8Wed11:062.911:372.54:020.35:320.27:034:21Waxing Crescent8Wed
9Thu11:592.64:580.56:300.47:044:21First Quarter9Thu
10Fri12:322.412:532.46:380.67:240.47:054:21First Quarter10Fri
11Sat1:292.31:492.37:580.78:120.47:064:21First Quarter11Sat
12Sun2:292.42:492.29:020.68:570.47:064:21First Quarter12Sun
13Mon3:272.43:462.29:560.59:380.37:074:22Waxing Gibbous13Mon
14Tue4:152.64:332.310:430.410:160.27:084:22Waxing Gibbous14Tue
15Wed4:542.85:142.411:260.210:510.17:094:22Waxing Gibbous15Wed
16Thu5:303.05:512.512:070.17:094:22Waxing Gibbous16Thu
17Fri6:053.16:292.612:46-0.17:104:23Full Moon17Fri
18Sat6:423.37:082.712:05-0.21:24-0.27:114:23Full Moon18Sat
19Sun7:213.47:492.812:44-0.31:59-0.27:114:24Full Moon19Sun
20Mon8:033.48:322.81:24-0.32:32-0.27:124:24Full Moon20Mon
21Tue8:463.39:182.82:06-0.33:07-0.27:124:24Waning Gibbous21Tue
22Wed9:333.310:082.82:51-0.23:46-0.27:134:25Waning Gibbous22Wed
23Thu10:233.111:032.83:39-0.14:32-0.17:134:25Waning Gibbous23Thu
24Fri11:183.04:350.05:29-0.17:144:26Third Quarter24Fri
25Sat12:002.812:162.85:450.16:34-0.17:144:27Third Quarter25Sat
26Sun1:012.91:182.77:190.27:42-0.17:144:27Third Quarter26Sun
27Mon2:053.02:242.68:470.18:48-0.17:154:28Third Quarter27Mon
28Tue3:113.23:342.69:57-0.19:48-0.27:154:29Waning Crescent28Tue
29Wed4:143.44:372.710:55-0.210:42-0.37:154:29Waning Crescent29Wed
30Thu5:103.55:322.811:48-0.411:32-0.47:154:30Waning Crescent30Thu
31Fri6:023.66:232.912:37-0.57:164:31New Moon31Fri
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 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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