Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

63°
H -°
L 58°
NNE
12mph
Low tide
7:10 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 22m at 7:10 am (1.0 ft)
Next high tide : 2:36 pm (2.5 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% 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 1860

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:402.94:183.410:04-0.110:47-0.14:466:47Waxing Gibbous1Tue
2Wed4:403.05:123.710:50-0.211:42-0.34:456:48Waxing Gibbous2Wed
3Thu5:343.16:023.911:33-0.34:446:49Full Moon3Thu
4Fri6:253.16:514.012:34-0.412:17-0.44:436:50Full Moon4Fri
5Sat7:153.17:394.01:24-0.41:00-0.34:416:51Full Moon5Sat
6Sun8:033.18:263.82:11-0.41:43-0.24:406:52Full Moon6Sun
7Mon8:503.09:143.62:55-0.22:24-0.14:396:53Waning Gibbous7Mon
8Tue9:382.810:023.33:400.03:050.14:386:54Waning Gibbous8Tue
9Wed10:282.710:533.04:270.23:480.34:376:55Waning Gibbous9Wed
10Thu11:212.511:462.75:230.44:390.64:366:56Waning Gibbous10Thu
11Fri12:162.46:210.55:530.74:356:57Third Quarter11Fri
12Sat12:392.51:122.47:150.67:260.84:346:58Third Quarter12Sat
13Sun1:322.42:082.48:020.68:350.84:336:59Third Quarter13Sun
14Mon2:292.33:062.58:440.69:340.74:327:00Third Quarter14Mon
15Tue3:272.33:562.79:230.510:240.64:317:01Waning Crescent15Tue
16Wed4:172.34:372.99:590.411:100.44:307:02Waning Crescent16Wed
17Thu4:592.45:143.110:340.311:530.34:297:03Waning Crescent17Thu
18Fri5:382.55:503.211:100.24:287:04Waning Crescent18Fri
19Sat6:172.66:283.412:340.211:48 AM0.14:277:05New Moon19Sat
20Sun6:562.77:083.51:150.112:270.04:267:06New Moon20Sun
21Mon7:382.77:513.51:530.01:090.04:257:07New Moon21Mon
22Tue8:222.88:363.52:310.01:530.04:257:08Waxing Crescent22Tue
23Wed9:082.89:233.43:080.12:380.04:247:09Waxing Crescent23Wed
24Thu9:582.810:133.33:500.13:260.14:237:10Waxing Crescent24Thu
25Fri10:532.911:083.24:390.24:220.24:227:10Waxing Crescent25Fri
26Sat11:502.95:380.25:300.34:227:11First Quarter26Sat
27Sun12:053.112:493.16:380.26:550.44:217:12First Quarter27Sun
28Mon1:032.91:503.27:340.18:220.34:217:13First Quarter28Mon
29Tue2:062.82:533.48:290.19:350.24:207:14Waxing Gibbous29Tue
30Wed3:132.83:553.69:230.010:360.14:207:15Waxing Gibbous30Wed
31Thu4:172.84:523.710:150.011:310.04:197:15Waxing Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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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 58% 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 (58% 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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