Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

61°
H -°
L 57°
NE
12mph
High tide
5:15 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 11:17 am (0.7 ft)
Next high tide : in 4h 35m at 5:15 am (2.4 ft)
Sunset today : 6:43 pm
Sunrise tomorrow : 6:34 am
Moon phase : Waxing Gibbous (83% 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 - Apr 1856

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:552.94:242.810:350.010:39-0.15:326:15Waning Crescent1Tue
2Wed4:553.25:193.211:19-0.311:37-0.45:306:16Waning Crescent2Wed
3Thu5:473.46:093.612:00-0.55:296:17New Moon3Thu
4Fri6:363.56:573.912:31-0.612:41-0.75:276:18New Moon4Fri
5Sat7:243.57:444.01:23-0.81:20-0.85:266:19New Moon5Sat
6Sun8:123.48:324.02:12-0.81:59-0.75:246:20New Moon6Sun
7Mon8:593.29:193.83:01-0.62:37-0.55:226:21Waxing Crescent7Mon
8Tue9:492.910:093.53:51-0.43:17-0.35:216:22Waxing Crescent8Tue
9Wed10:412.711:043.24:48-0.14:000.05:196:23Waxing Crescent9Wed
10Thu11:382.45:580.24:520.35:176:25First Quarter10Thu
11Fri12:052.812:392.37:110.46:050.55:166:26First Quarter11Fri
12Sat1:122.61:462.28:180.57:560.65:146:27First Quarter12Sat
13Sun2:272.42:572.29:180.59:140.65:136:28First Quarter13Sun
14Mon3:372.43:592.410:070.510:120.55:116:29Waxing Gibbous14Mon
15Tue4:312.44:492.610:470.410:570.45:096:30Waxing Gibbous15Tue
16Wed5:132.55:302.811:210.311:380.35:086:31Waxing Gibbous16Wed
17Thu5:492.66:063.011:500.25:066:32Waxing Gibbous17Thu
18Fri6:212.66:393.112:150.112:160.15:056:33Full Moon18Fri
19Sat6:522.77:093.212:520.012:400.05:036:34Full Moon19Sat
20Sun7:232.77:403.31:270.01:050.05:026:35Full Moon20Sun
21Mon7:562.68:123.32:000.01:330.05:006:36Full Moon21Mon
22Tue8:322.68:483.22:300.02:050.14:596:37Waning Gibbous22Tue
23Wed9:102.59:273.13:020.12:400.14:576:38Waning Gibbous23Wed
24Thu9:532.410:133.03:370.23:200.24:566:39Waning Gibbous24Thu
25Fri10:422.411:052.94:210.34:060.34:556:40Waning Gibbous25Fri
26Sat11:392.35:190.45:030.44:536:42Third Quarter26Sat
27Sun12:052.812:402.46:380.56:140.54:526:43Third Quarter27Sun
28Mon1:082.81:462.57:590.47:430.44:516:44Third Quarter28Mon
29Tue2:172.92:562.89:020.29:200.34:496:45Third Quarter29Tue
30Wed3:263.04:003.19:540.010:290.04:486:46Waning Crescent30Wed
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 83% 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 (83% 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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