Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

76°
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 1h 12m 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 - Jun 2033

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:283.011:423.15:270.14:520.35:158:13Waxing Crescent1Wed
2Thu12:202.86:170.25:420.55:158:13Waxing Crescent2Thu
3Fri12:312.91:122.77:080.46:460.75:148:14First Quarter3Fri
4Sat1:182.62:032.77:550.58:020.85:148:15First Quarter4Sat
5Sun2:062.52:552.68:390.69:110.85:148:15First Quarter5Sun
6Mon2:572.33:512.79:210.610:130.75:138:16First Quarter6Mon
7Tue3:562.34:442.810:030.611:070.65:138:17Waxing Gibbous7Tue
8Wed4:552.35:312.910:450.511:550.55:138:17Waxing Gibbous8Wed
9Thu5:432.46:113.111:260.45:138:18Waxing Gibbous9Thu
10Fri6:252.56:493.312:400.312:050.35:138:18Waxing Gibbous10Fri
11Sat7:062.77:283.41:230.212:450.25:138:19Full Moon11Sat
12Sun7:472.88:093.52:050.11:270.15:128:19Full Moon12Sun
13Mon8:302.98:503.62:440.02:090.05:128:20Full Moon13Mon
14Tue9:143.09:343.63:200.02:520.05:128:20Full Moon14Tue
15Wed10:003.110:203.53:55-0.13:370.05:128:20Waning Gibbous15Wed
16Thu10:483.111:083.44:33-0.14:240.15:128:21Waning Gibbous16Thu
17Fri11:403.15:150.05:180.25:138:21Waning Gibbous17Fri
18Sat12:013.312:353.26:050.06:240.35:138:22Third Quarter18Sat
19Sun12:563.21:323.37:000.07:510.45:138:22Third Quarter19Sun
20Mon1:543.02:323.37:590.09:190.45:138:22Third Quarter20Mon
21Tue2:562.93:363.48:590.010:310.35:138:22Third Quarter21Tue
22Wed4:032.94:413.510:030.011:330.15:148:22Waning Crescent22Wed
23Thu5:092.95:423.711:040.05:148:23Waning Crescent23Thu
24Fri6:083.06:373.812:290.012:00-0.15:148:23Waning Crescent24Fri
25Sat7:023.17:283.81:21-0.112:52-0.15:148:23New Moon25Sat
26Sun7:533.28:173.82:10-0.11:42-0.15:158:23New Moon26Sun
27Mon8:423.29:033.72:55-0.22:28-0.15:158:23New Moon27Mon
28Tue9:293.29:473.53:37-0.13:100.05:168:23New Moon28Tue
29Wed10:153.110:293.34:150.03:490.25:168:23Waxing Crescent29Wed
30Thu11:003.011:103.14:510.14:270.35:178:23Waxing Crescent30Thu
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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