Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

71°
H 72°
L 65°
SW
11mph
Low tide
5:45 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 5h 37m at 5:45 pm (0.7 ft)
Next high tide (tomorrow) : 12:06 am (2.4 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:28 am
Moon phase : Waxing Crescent (30% 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 - Sep 1863

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:473.710:113.23:10-0.24:070.15:166:24Waning Gibbous1Tue
2Wed10:373.511:012.93:450.15:060.45:176:22Waning Gibbous2Wed
3Thu11:293.211:552.64:230.36:150.65:186:20Third Quarter3Thu
4Fri12:252.95:090.57:240.85:196:19Third Quarter4Fri
5Sat12:512.51:262.86:070.78:280.95:206:17Third Quarter5Sat
6Sun1:542.42:372.77:260.89:260.85:216:15Third Quarter6Sun
7Mon3:032.43:452.78:540.810:160.85:226:14Waning Crescent7Mon
8Tue4:042.54:362.89:550.710:580.65:236:12Waning Crescent8Tue
9Wed4:522.65:172.910:440.611:350.55:246:10Waning Crescent9Wed
10Thu5:332.85:513.011:260.45:256:09Waning Crescent10Thu
11Fri6:083.06:223.112:080.412:060.35:266:07New Moon11Fri
12Sat6:423.26:543.212:380.212:440.25:276:05New Moon12Sat
13Sun7:163.47:273.21:030.11:210.15:286:04New Moon13Sun
14Mon7:503.58:033.21:270.11:550.15:296:02New Moon14Mon
15Tue8:273.58:423.11:540.12:300.25:306:00Waxing Crescent15Tue
16Wed9:073.59:243.02:250.13:060.25:315:58Waxing Crescent16Wed
17Thu9:513.410:122.93:020.13:490.45:325:57Waxing Crescent17Thu
18Fri10:423.411:052.83:440.24:400.55:335:55Waxing Crescent18Fri
19Sat11:383.34:350.35:510.65:345:53First Quarter19Sat
20Sun12:052.712:403.25:370.47:300.65:355:52First Quarter20Sun
21Mon1:092.81:483.26:540.58:470.45:365:50First Quarter21Mon
22Tue2:192.92:593.38:330.49:470.25:375:48Waxing Gibbous22Tue
23Wed3:303.14:063.59:550.210:380.05:385:46Waxing Gibbous23Wed
24Thu4:323.45:023.610:560.011:23-0.25:395:45Waxing Gibbous24Thu
25Fri5:263.75:533.711:50-0.25:405:43Full Moon25Fri
26Sat6:163.96:413.712:06-0.312:40-0.35:415:41Full Moon26Sat
27Sun7:034.07:273.712:46-0.41:28-0.35:425:40Full Moon27Sun
28Mon7:494.08:133.51:23-0.32:13-0.25:435:38Full Moon28Mon
29Tue8:343.98:573.31:58-0.22:55-0.15:445:36Waning Gibbous29Tue
30Wed9:183.79:433.12:31-0.13:360.25:455:35Waning Gibbous30Wed
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.
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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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 (30% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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