Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

48°
H -°
L 46°
E
5mph
Low tide
9:02 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, October 18, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 25m at 9:02 pm (0.9 ft)
Next high tide (tomorrow) : 2:19 am (2.1 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 - May 1803

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:492.34:152.710:030.510:280.54:486:46Waxing Gibbous1Sun
2Mon4:362.44:582.810:370.411:110.44:476:47Waxing Gibbous2Mon
3Tue5:162.45:363.011:070.311:510.34:456:48Waxing Gibbous3Tue
4Wed5:512.56:093.211:340.24:446:49Waxing Gibbous4Wed
5Thu6:252.56:423.312:300.112:020.14:436:50Full Moon5Thu
6Fri6:582.67:153.31:080.112:330.14:426:51Full Moon6Fri
7Sat7:342.67:503.31:430.01:070.14:406:52Full Moon7Sat
8Sun8:112.68:283.32:170.11:430.14:396:53Full Moon8Sun
9Mon8:512.69:093.22:500.12:210.24:386:54Waning Gibbous9Mon
10Tue9:352.59:553.13:260.23:020.24:376:55Waning Gibbous10Tue
11Wed10:242.510:463.04:080.33:490.34:366:56Waning Gibbous11Wed
12Thu11:192.511:423.05:010.44:450.44:356:57Third Quarter12Thu
13Fri12:182.66:050.35:550.54:346:58Third Quarter13Fri
14Sat12:402.91:192.87:100.37:220.54:336:59Third Quarter14Sat
15Sun1:422.92:233.08:090.28:560.34:327:00Third Quarter15Sun
16Mon2:492.93:273.39:040.010:070.14:317:01Waning Crescent16Mon
17Tue3:542.94:263.69:55-0.111:06-0.14:307:02Waning Crescent17Tue
18Wed4:533.05:203.810:44-0.34:297:03Waning Crescent18Wed
19Thu5:473.16:114.012:01-0.311:31 AM-0.34:287:04New Moon19Thu
20Fri6:393.17:014.012:54-0.412:19-0.34:277:05New Moon20Fri
21Sat7:303.17:514.01:44-0.41:07-0.34:267:06New Moon21Sat
22Sun8:203.18:413.82:32-0.31:55-0.24:257:07Waxing Crescent22Sun
23Mon9:103.09:303.53:20-0.12:410.04:257:08Waxing Crescent23Mon
24Tue10:012.910:213.24:090.03:270.24:247:08Waxing Crescent24Tue
25Wed10:542.711:133.05:020.24:180.44:237:09Waxing Crescent25Wed
26Thu11:492.65:580.45:210.64:237:10First Quarter26Thu
27Fri12:052.712:432.66:500.56:400.74:227:11First Quarter27Fri
28Sat12:552.51:372.67:350.57:500.84:217:12First Quarter28Sat
29Sun1:452.42:322.68:160.68:520.84:217:13First Quarter29Sun
30Mon2:402.33:262.78:530.69:470.74:207:14Waxing Gibbous30Mon
31Tue3:372.24:132.99:280.510:360.64:207:14Waxing 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 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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