Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

59°
H -°
L 50°
NNE
26mph
Low tide
10:40 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, October 20, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 5h 42m at 10:40 pm (0.7 ft)
Next high tide (tomorrow) : 4:27 am (2.5 ft)
Sunset today : 5:58 pm
Sunrise tomorrow : 7:03 am
Moon phase : First Quarter (69% 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 - Jan 1802

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:313.24:562.411:18-0.110:37-0.27:164:32Waning Crescent1Fri
2Sat5:263.45:492.612:08-0.37:164:32Waning Crescent2Sat
3Sun6:183.76:412.812:57-0.57:164:33New Moon3Sun
4Mon7:093.87:323.012:26-0.61:45-0.67:164:34New Moon4Mon
5Tue8:003.88:233.11:21-0.72:30-0.77:164:35New Moon5Tue
6Wed8:503.79:143.22:15-0.73:15-0.77:164:36Waxing Crescent6Wed
7Thu9:413.510:073.23:08-0.63:59-0.67:164:37Waxing Crescent7Thu
8Fri10:333.211:033.14:07-0.44:45-0.47:164:38Waxing Crescent8Fri
9Sat11:272.95:19-0.15:35-0.37:154:39First Quarter9Sat
10Sun12:013.012:232.56:410.16:26-0.17:154:40First Quarter10Sun
11Mon1:002.91:222.27:570.27:200.07:154:41First Quarter11Mon
12Tue2:032.82:272.19:080.38:190.17:154:42First Quarter12Tue
13Wed3:112.83:362.010:100.39:240.27:144:43Waxing Gibbous13Wed
14Thu4:162.74:372.111:040.210:230.27:144:44Waxing Gibbous14Thu
15Fri5:112.85:282.211:500.211:120.17:144:46Waxing Gibbous15Fri
16Sat5:582.86:132.312:320.17:134:47Waxing Gibbous16Sat
17Sun6:402.86:552.41:100.07:134:48Full Moon17Sun
18Mon7:172.97:342.512:340.01:45-0.17:124:49Full Moon18Mon
19Tue7:512.98:102.51:11-0.12:16-0.17:124:50Full Moon19Tue
20Wed8:222.88:452.51:46-0.12:44-0.17:114:51Full Moon20Wed
21Thu8:522.89:192.52:20-0.13:07-0.17:104:52Waning Gibbous21Thu
22Fri9:232.69:542.52:550.03:28-0.17:104:54Waning Gibbous22Fri
23Sat9:572.510:302.53:310.13:540.07:094:55Waning Gibbous23Sat
24Sun10:352.311:112.54:120.24:250.07:084:56Waning Gibbous24Sun
25Mon11:192.211:562.54:590.35:040.17:084:57Third Quarter25Mon
26Tue12:092.15:570.45:520.17:074:59Third Quarter26Tue
27Wed12:472.51:062.07:080.46:490.17:065:00Third Quarter27Wed
28Thu1:472.62:132.08:430.37:540.17:055:01Third Quarter28Thu
29Fri2:582.73:282.110:030.19:090.07:045:02Waning Crescent29Fri
30Sat4:093.04:362.311:02-0.110:23-0.27:035:04Waning Crescent30Sat
31Sun5:103.35:342.611:53-0.411:27-0.57:035:05Waning Crescent31Sun
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 transitional phase. Tonight's moon is 69% 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 First Quarter (69% 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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