Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

69°
H 77°
L 66°
WSW
8mph
High tide
5:49 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 11:36 am (0.7 ft)
Next high tide : in 1h 29m at 5:49 am (2.3 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 - Jul 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:243.02:013.47:190.08:500.45:168:23Third Quarter1Mon
2Tue2:232.83:023.48:160.110:040.45:178:22Third Quarter2Tue
3Wed3:282.74:093.59:190.111:090.35:178:22Waning Crescent3Wed
4Thu4:372.75:153.510:270.15:188:22Waning Crescent4Thu
5Fri5:412.86:133.612:070.211:30 AM0.15:188:22Waning Crescent5Fri
6Sat6:382.97:073.71:000.112:270.05:198:22New Moon6Sat
7Sun7:303.17:563.71:490.01:200.05:208:21New Moon7Sun
8Mon8:193.28:423.62:350.02:090.05:208:21New Moon8Mon
9Tue9:063.29:253.53:16-0.12:530.15:218:21New Moon9Tue
10Wed9:503.210:053.33:520.03:320.25:228:20Waxing Crescent10Wed
11Thu10:343.110:433.14:250.14:080.35:228:20Waxing Crescent11Thu
12Fri11:173.011:212.94:530.24:460.45:238:19Waxing Crescent12Fri
13Sat11:592.95:190.35:290.65:248:19Waxing Crescent13Sat
14Sun12:002.712:412.85:490.46:200.75:258:18First Quarter14Sun
15Mon12:392.51:212.86:250.57:230.85:258:18First Quarter15Mon
16Tue1:212.42:042.77:080.68:350.95:268:17First Quarter16Tue
17Wed2:082.22:542.77:560.69:510.85:278:17First Quarter17Wed
18Thu3:042.23:542.88:500.610:540.75:288:16Waxing Gibbous18Thu
19Fri4:102.24:562.99:520.611:470.65:298:15Waxing Gibbous19Fri
20Sat5:142.35:503.110:540.55:298:14Waxing Gibbous20Sat
21Sun6:072.66:373.412:340.411:51 AM0.35:308:14Waxing Gibbous21Sun
22Mon6:552.87:233.61:180.212:420.15:318:13Full Moon22Mon
23Tue7:433.08:083.71:590.01:330.05:328:12Full Moon23Tue
24Wed8:303.38:533.82:37-0.12:23-0.15:338:11Full Moon24Wed
25Thu9:173.59:393.83:14-0.23:12-0.25:348:10Waning Gibbous25Thu
26Fri10:053.610:273.63:50-0.34:02-0.15:358:10Waning Gibbous26Fri
27Sat10:553.711:173.44:28-0.34:550.05:368:09Waning Gibbous27Sat
28Sun11:473.65:09-0.26:000.25:378:08Waning Gibbous28Sun
29Mon12:103.212:433.65:56-0.17:230.35:388:07Third Quarter29Mon
30Tue1:063.01:423.56:500.08:420.45:398:06Third Quarter30Tue
31Wed2:062.82:453.47:520.29:540.45:408:05Third Quarter31Wed
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.
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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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