Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

52°
H -°
L 49°
NNE
28mph
Low tide
11:14 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 22m at 11:14 pm (0.5 ft)
Next high tide (tomorrow) : 5:14 am (2.8 ft)
Sunset today : 5:56 pm
Sunrise tomorrow : 7:04 am
Moon phase : Waxing Gibbous (78% 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 - Feb 1800

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:162.412:351.96:410.56:010.37:015:07First Quarter1Sat
2Sun1:012.31:281.78:080.66:530.47:005:08First Quarter2Sun
3Mon1:562.22:381.79:230.57:540.46:595:09First Quarter3Mon
4Tue3:132.23:551.710:230.49:080.46:585:10Waxing Gibbous4Tue
5Wed4:242.34:501.911:130.310:170.26:575:12Waxing Gibbous5Wed
6Thu5:132.55:332.111:580.111:110.06:565:13Waxing Gibbous6Thu
7Fri5:542.86:132.312:380.06:555:14Waxing Gibbous7Fri
8Sat6:323.06:522.61:14-0.26:535:15Full Moon8Sat
9Sun7:103.17:332.812:42-0.31:46-0.36:525:17Full Moon9Sun
10Mon7:493.28:143.01:25-0.52:14-0.46:515:18Full Moon10Mon
11Tue8:293.28:563.12:07-0.52:41-0.56:505:19Waning Gibbous11Tue
12Wed9:113.19:413.22:49-0.53:11-0.56:495:20Waning Gibbous12Wed
13Thu9:562.910:293.23:34-0.43:45-0.56:475:22Waning Gibbous13Thu
14Fri10:462.711:213.14:25-0.24:26-0.46:465:23Waning Gibbous14Fri
15Sat11:402.55:290.05:15-0.26:455:24Third Quarter15Sat
16Sun12:183.012:402.36:540.16:15-0.16:435:25Third Quarter16Sun
17Mon1:212.91:472.18:260.17:290.06:425:26Third Quarter17Mon
18Tue2:352.93:052.19:410.19:120.06:415:28Waning Crescent18Tue
19Wed3:522.94:182.310:430.010:32-0.16:395:29Waning Crescent19Wed
20Thu4:573.05:172.511:36-0.211:32-0.36:385:30Waning Crescent20Thu
21Fri5:513.26:082.812:23-0.36:365:31Waning Crescent21Fri
22Sat6:383.26:553.012:23-0.41:04-0.46:355:32New Moon22Sat
23Sun7:213.27:393.11:09-0.41:40-0.56:335:34New Moon23Sun
24Mon8:013.28:193.11:49-0.42:10-0.56:325:35New Moon24Mon
25Tue8:383.08:573.02:24-0.42:36-0.46:305:36Waxing Crescent25Tue
26Wed9:142.89:332.92:56-0.22:58-0.36:295:37Waxing Crescent26Wed
27Thu9:502.610:072.83:26-0.13:23-0.26:275:38Waxing Crescent27Thu
28Fri10:262.310:412.63:580.13:520.06:265:39Waxing Crescent28Fri
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.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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 78% 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 Gibbous (78% 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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