Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

69°
H -°
L 65°
SW
6mph
Low tide
12:42 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 49m at 12:42 am (0.6 ft)
Next high tide (tomorrow) : 6:31 am (2.5 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waxing Gibbous (88% 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 - Sep 1916

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri9:293.49:432.92:470.13:250.35:126:19Waxing Crescent1Fri
2Sat10:123.310:302.83:220.24:090.55:136:18Waxing Crescent2Sat
3Sun11:023.311:232.74:030.35:030.65:146:16First Quarter3Sun
4Mon11:583.24:540.36:180.75:156:15First Quarter4Mon
5Tue12:232.61:013.25:560.47:590.65:166:13First Quarter5Tue
6Wed1:292.62:123.27:100.49:160.55:176:11First Quarter6Wed
7Thu2:422.73:263.48:420.410:150.35:186:10Waxing Gibbous7Thu
8Fri3:543.04:313.610:070.211:050.05:196:08Waxing Gibbous8Fri
9Sat4:553.35:253.711:090.011:51-0.25:206:06Waxing Gibbous9Sat
10Sun5:483.66:153.812:05-0.25:216:04Full Moon10Sun
11Mon6:373.87:033.812:32-0.312:56-0.35:226:03Full Moon11Mon
12Tue7:244.07:483.71:12-0.41:45-0.35:236:01Full Moon12Tue
13Wed8:104.08:333.51:48-0.32:31-0.25:245:59Waning Gibbous13Wed
14Thu8:553.99:183.22:21-0.23:140.05:255:58Waning Gibbous14Thu
15Fri9:393.610:033.02:530.03:580.25:265:56Waning Gibbous15Fri
16Sat10:263.310:522.73:260.24:490.55:275:54Waning Gibbous16Sat
17Sun11:153.011:452.54:040.46:010.85:285:53Third Quarter17Sun
18Mon12:112.84:490.77:170.95:295:51Third Quarter18Mon
19Tue12:432.31:142.65:470.88:240.95:305:49Third Quarter19Tue
20Wed1:482.22:292.57:080.99:230.95:315:47Third Quarter20Wed
21Thu2:592.33:392.68:480.910:110.85:325:46Waning Crescent21Thu
22Fri4:002.44:292.79:520.810:500.65:335:44Waning Crescent22Fri
23Sat4:462.65:082.810:400.611:250.55:345:42Waning Crescent23Sat
24Sun5:242.95:403.011:230.411:550.35:355:41Waning Crescent24Sun
25Mon5:583.16:113.112:030.35:365:39New Moon25Mon
26Tue6:313.36:443.112:210.212:410.15:375:37New Moon26Tue
27Wed7:053.57:193.112:450.11:180.15:385:35New Moon27Wed
28Thu7:423.67:573.11:110.01:540.15:395:34New Moon28Thu
29Fri8:213.78:383.01:420.02:300.15:405:32Waxing Crescent29Fri
30Sat9:033.69:232.92:170.03:090.25:415:30Waxing Crescent30Sat
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 spring phase. Tonight's moon is 88% 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 (88% 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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