Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

48°
H 51°
L 41°
N
17mph
High tide
12:47 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, October 17, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 7:48 pm (0.9 ft)
Next high tide : in 2h 10m at 12:47 pm (2.6 ft)
Sunset today : 6:02 pm
Sunrise tomorrow : 7:00 am
Moon phase : First Quarter (41% 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 1805

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:212.62:462.39:170.58:450.36:564:22Waxing Gibbous1Sun
2Mon3:192.93:472.410:130.39:350.16:574:22Waxing Gibbous2Mon
3Tue4:143.24:432.611:020.110:25-0.16:584:22Waxing Gibbous3Tue
4Wed5:053.55:342.811:49-0.211:13-0.36:594:22Waxing Gibbous4Wed
5Thu5:543.76:233.012:37-0.37:004:21Full Moon5Thu
6Fri6:443.97:143.112:02-0.51:25-0.57:014:21Full Moon6Fri
7Sat7:354.08:043.212:53-0.62:13-0.57:024:21Full Moon7Sat
8Sun8:273.98:563.21:45-0.63:01-0.57:034:21Waning Gibbous8Sun
9Mon9:193.89:503.22:38-0.53:51-0.47:044:21Waning Gibbous9Mon
10Tue10:133.510:473.13:33-0.44:47-0.27:054:21Waning Gibbous10Tue
11Wed11:103.211:473.14:38-0.15:48-0.17:054:21Third Quarter11Wed
12Thu12:082.96:040.16:470.07:064:21Third Quarter12Thu
13Fri12:483.01:082.67:260.27:430.17:074:22Third Quarter13Fri
14Sat1:513.02:112.48:380.38:380.17:084:22Third Quarter14Sat
15Sun2:553.03:162.39:420.39:300.27:094:22Waning Crescent15Sun
16Mon3:563.04:162.310:370.210:170.27:094:22Waning Crescent16Mon
17Tue4:493.15:082.311:240.210:590.17:104:23Waning Crescent17Tue
18Wed5:373.15:532.412:070.17:114:23Waning Crescent18Wed
19Thu6:203.16:352.512:450.17:114:23New Moon19Thu
20Fri6:593.17:152.512:130.11:220.07:124:24New Moon20Fri
21Sat7:363.17:522.512:490.01:560.07:124:24New Moon21Sat
22Sun8:113.08:282.51:240.02:280.07:134:25New Moon22Sun
23Mon8:442.99:042.51:590.12:580.07:134:25Waxing Crescent23Mon
24Tue9:182.89:412.42:340.13:260.17:144:26Waxing Crescent24Tue
25Wed9:532.710:202.43:120.23:560.17:144:27Waxing Crescent25Wed
26Thu10:322.511:032.43:520.44:300.27:144:27Waxing Crescent26Thu
27Fri11:162.411:482.44:400.55:110.27:154:28First Quarter27Fri
28Sat12:052.35:380.55:570.27:154:29First Quarter28Sat
29Sun12:382.512:592.26:500.56:490.27:154:29First Quarter29Sun
30Mon1:332.62:002.18:240.57:470.17:154:30First Quarter30Mon
31Tue2:352.83:092.29:430.38:510.07:164:31Waxing Gibbous31Tue
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 neap phase. Tonight's moon is 41% 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 minimum.

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 (41% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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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