Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

59°
H 65°
L 56°
ENE
18mph
High tide
5:57 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 12:03 pm (0.5 ft)
Next high tide : in 24m at 5:57 am (2.7 ft)
Sunset today : 6:42 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Gibbous (90% 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 - Apr 1853

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:193.01:492.48:230.28:170.35:336:15Third Quarter1Fri
2Sat2:342.83:052.49:290.29:390.25:316:16Third Quarter2Sat
3Sun3:472.84:122.610:250.210:410.15:296:17Waning Crescent3Sun
4Mon4:462.85:062.811:120.111:320.05:286:18Waning Crescent4Mon
5Tue5:352.95:533.011:510.05:266:19Waning Crescent5Tue
6Wed6:172.96:353.112:16-0.112:26-0.15:246:20New Moon6Wed
7Thu6:563.07:133.212:55-0.112:55-0.25:236:21New Moon7Thu
8Fri7:322.97:473.21:30-0.11:19-0.25:216:22New Moon8Fri
9Sat8:062.98:193.22:01-0.11:43-0.25:196:23New Moon9Sat
10Sun8:402.78:493.12:29-0.12:09-0.15:186:24Waxing Crescent10Sun
11Mon9:142.69:202.92:570.02:390.05:166:25Waxing Crescent11Mon
12Tue9:502.49:542.83:260.23:130.25:156:26Waxing Crescent12Tue
13Wed10:302.310:332.74:010.33:510.35:136:27Waxing Crescent13Wed
14Thu11:142.111:192.54:440.54:350.55:116:29First Quarter14Thu
15Fri12:052.15:420.65:280.65:106:30First Quarter15Fri
16Sat12:132.51:022.07:270.76:330.65:086:31First Quarter16Sat
17Sun1:142.42:072.18:490.67:490.65:076:32First Quarter17Sun
18Mon2:242.53:162.49:420.49:150.45:056:33Waxing Gibbous18Mon
19Tue3:352.74:152.710:250.210:230.15:046:34Waxing Gibbous19Tue
20Wed4:342.95:063.111:020.011:18-0.25:026:35Waxing Gibbous20Wed
21Thu5:253.15:533.511:38-0.35:016:36Waxing Gibbous21Thu
22Fri6:143.36:393.912:09-0.412:16-0.54:596:37Full Moon22Fri
23Sat7:023.47:274.11:00-0.612:56-0.64:586:38Full Moon23Sat
24Sun7:513.48:154.21:50-0.71:38-0.64:566:39Full Moon24Sun
25Mon8:403.39:054.12:39-0.72:21-0.54:556:40Waning Gibbous25Mon
26Tue9:313.19:573.93:31-0.53:07-0.44:546:41Waning Gibbous26Tue
27Wed10:262.910:553.64:29-0.33:57-0.14:526:42Waning Gibbous27Wed
28Thu11:252.811:573.35:390.04:590.14:516:43Third Quarter28Thu
29Fri12:282.66:520.16:390.34:506:44Third Quarter29Fri
30Sat1:033.01:342.67:580.38:100.44:486:45Third Quarter30Sat
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 90% 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 Gibbous (90% 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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