Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

74°
H 77°
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 00m 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 - Dec 1917

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:593.39:262.82:09-0.13:260.06:524:18Waning Gibbous1Sat
2Sun9:423.110:132.62:480.14:060.26:534:18Waning Gibbous2Sun
3Mon10:262.811:032.53:290.34:510.36:544:18Waning Gibbous3Mon
4Tue11:122.611:542.44:150.55:420.46:554:17Third Quarter4Tue
5Wed11:582.45:120.66:330.56:564:17Third Quarter5Wed
6Thu12:452.412:452.26:310.77:190.56:574:17Third Quarter6Thu
7Fri1:362.41:362.17:560.78:010.56:584:17Third Quarter7Fri
8Sat2:302.52:352.19:040.68:450.56:584:17Waning Crescent8Sat
9Sun3:242.63:362.110:000.59:290.46:594:17Waning Crescent9Sun
10Mon4:122.84:272.210:480.310:120.27:004:17Waning Crescent10Mon
11Tue4:553.05:122.311:320.110:530.17:014:17Waning Crescent11Tue
12Wed5:363.25:542.512:140.07:024:17New Moon12Wed
13Thu6:183.46:372.712:56-0.17:034:17New Moon13Thu
14Fri7:013.57:222.812:18-0.21:36-0.27:034:18New Moon14Fri
15Sat7:463.68:082.91:03-0.32:14-0.37:044:18New Moon15Sat
16Sun8:323.58:562.91:49-0.32:53-0.37:054:18Waxing Crescent16Sun
17Mon9:193.49:463.02:36-0.33:33-0.37:064:18Waxing Crescent17Mon
18Tue10:103.310:403.03:26-0.24:18-0.37:064:19Waxing Crescent18Tue
19Wed11:043.111:383.04:240.05:09-0.27:074:19First Quarter19Wed
20Thu12:012.95:430.16:06-0.17:074:20First Quarter20Thu
21Fri12:373.11:012.67:200.27:06-0.17:084:20First Quarter21Fri
22Sat1:393.12:052.58:400.28:09-0.17:084:21First Quarter22Sat
23Sun2:463.13:142.49:470.19:13-0.17:094:21Waxing Gibbous23Sun
24Mon3:523.24:192.510:460.010:13-0.17:094:22Waxing Gibbous24Mon
25Tue4:513.35:152.611:38-0.111:06-0.27:104:22Waxing Gibbous25Tue
26Wed5:443.46:052.712:26-0.27:104:23Full Moon26Wed
27Thu6:323.46:532.81:11-0.27:104:24Full Moon27Thu
28Fri7:173.37:382.812:39-0.31:51-0.37:114:24Full Moon28Fri
29Sat7:593.28:212.81:20-0.22:28-0.27:114:25Full Moon29Sat
30Sun8:383.19:032.71:57-0.23:00-0.27:114:26Waning Gibbous30Sun
31Mon9:152.99:432.72:32-0.13:29-0.17:114:26Waning Gibbous31Mon
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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