Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

45°
H -°
L 41°
N
17mph
High tide
1:18 am
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 (tomorrow) : 6:35 am (1.0 ft)
Next high tide (tomorrow) : in 5h 01m at 1:18 am (2.1 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 - Mar 1805

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:193.07:353.11:10-0.41:26-0.46:255:40New Moon1Fri
2Sat7:563.18:143.31:47-0.41:53-0.56:235:42New Moon2Sat
3Sun8:363.08:553.42:24-0.42:24-0.66:215:43Waxing Crescent3Sun
4Mon9:192.99:403.33:02-0.42:59-0.56:205:44Waxing Crescent4Mon
5Tue10:062.710:283.33:44-0.33:39-0.46:185:45Waxing Crescent5Tue
6Wed10:582.611:233.14:35-0.14:26-0.36:175:46First Quarter6Wed
7Thu11:562.45:460.15:23-0.16:155:47First Quarter7Thu
8Fri12:253.01:002.37:310.26:340.06:135:48First Quarter8Fri
9Sat1:342.82:122.38:520.28:100.16:125:49First Quarter9Sat
10Sun2:532.83:282.59:570.09:460.06:105:51Waxing Gibbous10Sun
11Mon4:062.94:332.710:51-0.110:51-0.26:085:52Waxing Gibbous11Mon
12Tue5:053.05:283.011:38-0.311:45-0.46:075:53Waxing Gibbous12Tue
13Wed5:543.16:163.312:20-0.46:055:54Full Moon13Wed
14Thu6:393.27:013.412:34-0.512:57-0.56:035:55Full Moon14Thu
15Fri7:213.17:443.51:18-0.51:30-0.56:025:56Full Moon15Fri
16Sat8:013.08:243.41:57-0.51:58-0.46:005:57Full Moon16Sat
17Sun8:402.99:023.32:32-0.42:22-0.35:585:58Waning Gibbous17Sun
18Mon9:172.79:393.03:03-0.22:47-0.25:575:59Waning Gibbous18Mon
19Tue9:552.510:162.83:330.03:180.05:556:00Waning Gibbous19Tue
20Wed10:342.210:572.64:070.23:530.25:536:02Waning Gibbous20Wed
21Thu11:182.111:432.44:500.44:350.45:526:03Third Quarter21Thu
22Fri12:071.95:530.65:270.65:506:04Third Quarter22Fri
23Sat12:372.21:041.87:420.76:340.75:486:05Third Quarter23Sat
24Sun1:432.22:141.98:580.68:090.65:476:06Third Quarter24Sun
25Mon3:062.23:312.09:530.59:470.55:456:07Waning Crescent25Mon
26Tue4:082.44:252.310:360.310:410.35:436:08Waning Crescent26Tue
27Wed4:522.65:072.611:110.111:270.05:426:09Waning Crescent27Wed
28Thu5:312.85:473.011:43-0.15:406:10Waning Crescent28Thu
29Fri6:102.96:263.312:09-0.212:13-0.35:386:11New Moon29Fri
30Sat6:503.17:073.612:51-0.412:44-0.45:376:12New Moon30Sat
31Sun7:323.17:493.71:32-0.51:19-0.55:356:13New Moon31Sun
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 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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