Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

53°
H 54°
L 48°
NE
6mph
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 5h 39m 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 - Dec 1803

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:053.69:332.92:18-0.33:41-0.26:564:22Waning Gibbous1Thu
2Fri9:563.310:272.83:06-0.14:340.06:574:22Waning Gibbous2Fri
3Sat10:503.011:232.73:570.15:320.26:584:22Waning Gibbous3Sat
4Sun11:442.75:000.46:290.36:594:22Third Quarter4Sun
5Mon12:212.612:382.56:260.67:200.47:004:21Third Quarter5Mon
6Tue1:192.51:332.37:410.68:050.47:014:21Third Quarter6Tue
7Wed2:162.52:302.28:440.68:470.57:014:21Third Quarter7Wed
8Thu3:132.63:292.19:400.69:250.47:024:21Waning Crescent8Thu
9Fri4:042.74:212.110:280.510:010.47:034:21Waning Crescent9Fri
10Sat4:472.85:032.211:110.310:370.37:044:21Waning Crescent10Sat
11Sun5:262.95:412.311:520.211:140.27:054:21Waning Crescent11Sun
12Mon6:023.16:182.412:330.17:064:21New Moon12Mon
13Tue6:383.16:552.51:120.07:074:22New Moon13Tue
14Wed7:153.27:332.512:300.01:490.07:074:22New Moon14Wed
15Thu7:543.28:132.61:100.02:240.07:084:22New Moon15Thu
16Fri8:343.28:562.61:500.02:560.07:094:22Waxing Crescent16Fri
17Sat9:163.19:422.62:310.03:300.07:104:23Waxing Crescent17Sat
18Sun10:023.010:332.63:150.14:090.07:104:23Waxing Crescent18Sun
19Mon10:522.911:272.74:060.24:550.07:114:23Waxing Crescent19Mon
20Tue11:462.75:080.35:470.07:114:24First Quarter20Tue
21Wed12:232.812:442.66:290.36:420.07:124:24First Quarter21Wed
22Thu1:223.01:462.58:070.37:41-0.17:124:25First Quarter22Thu
23Fri2:263.12:542.59:260.18:44-0.17:134:25Waxing Gibbous23Fri
24Sat3:323.34:022.510:29-0.19:48-0.27:134:26Waxing Gibbous24Sat
25Sun4:343.55:032.611:25-0.210:47-0.37:144:26Waxing Gibbous25Sun
26Mon5:313.65:572.812:18-0.47:144:27Full Moon26Mon
27Tue6:243.76:492.91:08-0.47:154:27Full Moon27Tue
28Wed7:143.77:383.012:35-0.51:55-0.57:154:28Full Moon28Wed
29Thu8:033.68:263.01:26-0.52:38-0.47:154:29Full Moon29Thu
30Fri8:493.49:142.92:12-0.43:18-0.37:154:30Waning Gibbous30Fri
31Sat9:333.110:002.82:55-0.23:57-0.27:164:30Waning Gibbous31Sat
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 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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