Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

48°
H 55°
L 48°
NNE
14mph
High tide
1:47 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, October 18, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:02 pm (0.9 ft)
Next high tide : in 3h 31m at 1:47 pm (2.5 ft)
Sunset today : 6:01 pm
Sunrise tomorrow : 7:01 am
Moon phase : First Quarter (50% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
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 1804

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:332.81:112.96:410.37:200.64:197:16Third Quarter1Fri
2Sat1:312.72:103.17:340.28:460.44:187:16Third Quarter2Sat
3Sun2:342.73:123.48:300.19:590.24:187:17Waning Crescent3Sun
4Mon3:412.84:133.69:27-0.111:000.04:187:18Waning Crescent4Mon
5Tue4:442.95:103.910:24-0.211:56-0.24:177:18Waning Crescent5Tue
6Wed5:413.06:054.111:19-0.34:177:19New Moon6Wed
7Thu6:353.26:594.112:51-0.312:14-0.44:177:20New Moon7Thu
8Fri7:293.27:524.11:44-0.41:10-0.44:167:20New Moon8Fri
9Sat8:213.38:443.92:35-0.42:05-0.34:167:21Waxing Crescent9Sat
10Sun9:133.29:363.73:24-0.32:58-0.24:167:21Waxing Crescent10Sun
11Mon10:063.210:283.44:14-0.13:520.04:167:22Waxing Crescent11Mon
12Tue11:013.111:203.15:060.04:540.34:167:23Waxing Crescent12Tue
13Wed11:563.05:570.26:060.54:167:23First Quarter13Wed
14Thu12:112.812:502.96:440.37:130.64:167:23First Quarter14Thu
15Fri1:012.61:442.97:250.48:150.74:167:24First Quarter15Fri
16Sat1:532.42:392.98:020.59:130.74:167:24First Quarter16Sat
17Sun2:502.23:352.98:390.610:060.74:167:25Waxing Gibbous17Sun
18Mon3:502.24:262.99:200.610:530.64:167:25Waxing Gibbous18Mon
19Tue4:422.25:103.010:050.511:380.54:167:25Waxing Gibbous19Tue
20Wed5:272.35:513.110:490.54:167:25Waxing Gibbous20Wed
21Thu6:072.46:303.212:210.411:33 AM0.44:167:26Full Moon21Thu
22Fri6:462.57:083.21:040.312:170.34:177:26Full Moon22Fri
23Sat7:252.67:453.31:440.312:590.34:177:26Full Moon23Sat
24Sun8:052.78:233.32:210.21:410.34:177:26Full Moon24Sun
25Mon8:452.79:023.22:530.22:210.34:187:26Waning Gibbous25Mon
26Tue9:272.89:433.23:220.23:030.44:187:26Waning Gibbous26Tue
27Wed10:132.910:283.13:530.23:490.44:187:26Waning Gibbous27Wed
28Thu11:013.011:163.04:300.24:420.54:197:26Waning Gibbous28Thu
29Fri11:523.15:130.15:470.54:197:26Third Quarter29Fri
30Sat12:092.912:463.26:010.17:060.54:207:26Third Quarter30Sat
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 neap phase. Tonight's moon is 50% 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 (50% 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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