Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

70°
H 78°
L 65°
SW
7mph
Low tide
11:36 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 : in 2h 56m at 11:36 am (0.7 ft)
Next high tide : 6:20 pm (2.9 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 - Jan 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:502.710:242.53:080.03:520.07:114:27Waning Gibbous1Tue
2Wed10:262.511:052.43:470.24:200.17:124:28Waning Gibbous2Wed
3Thu11:052.311:472.44:310.44:550.27:124:29Third Quarter3Thu
4Fri11:472.15:250.55:380.37:124:30Third Quarter4Fri
5Sat12:312.312:342.06:330.66:260.47:124:31Third Quarter5Sat
6Sun1:182.31:271.98:010.67:190.47:124:32Third Quarter6Sun
7Mon2:152.42:311.99:200.58:200.37:124:33Waning Crescent7Mon
8Tue3:202.53:402.010:190.39:250.27:114:34Waning Crescent8Tue
9Wed4:192.84:382.211:080.110:240.07:114:35Waning Crescent9Wed
10Thu5:103.05:292.411:53-0.111:16-0.27:114:36Waning Crescent10Thu
11Fri5:573.36:162.712:36-0.37:114:37New Moon11Fri
12Sat6:433.57:042.912:06-0.41:16-0.57:104:38New Moon12Sat
13Sun7:293.67:513.112:56-0.61:56-0.67:104:39New Moon13Sun
14Mon8:163.68:393.21:45-0.72:34-0.77:104:40Waxing Crescent14Mon
15Tue9:033.59:293.32:34-0.63:12-0.77:094:41Waxing Crescent15Tue
16Wed9:523.310:213.33:24-0.53:52-0.67:094:42Waxing Crescent16Wed
17Thu10:443.011:163.24:22-0.34:36-0.57:094:43Waxing Crescent17Thu
18Fri11:402.75:37-0.15:27-0.37:084:45First Quarter18Fri
19Sat12:143.112:392.57:050.06:27-0.27:074:46First Quarter19Sat
20Sun1:163.01:432.38:230.17:39-0.17:074:47First Quarter20Sun
21Mon2:262.92:542.29:330.19:000.07:064:48Waxing Gibbous21Mon
22Tue3:392.94:042.310:330.110:100.07:064:49Waxing Gibbous22Tue
23Wed4:422.95:022.411:260.011:06-0.17:054:51Waxing Gibbous23Wed
24Thu5:353.05:522.612:12-0.17:044:52Waxing Gibbous24Thu
25Fri6:213.06:382.712:53-0.27:044:53Full Moon25Fri
26Sat7:023.07:202.812:36-0.21:29-0.37:034:54Full Moon26Sat
27Sun7:403.08:002.81:13-0.32:01-0.37:024:55Full Moon27Sun
28Mon8:142.98:362.81:46-0.32:28-0.37:014:57Full Moon28Mon
29Tue8:462.89:112.72:17-0.22:49-0.37:004:58Waning Gibbous29Tue
30Wed9:172.79:452.62:48-0.13:10-0.26:594:59Waning Gibbous30Wed
31Thu9:492.510:192.53:220.03:36-0.16:585:00Waning Gibbous31Thu
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 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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