Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

64°
H -°
L 57°
NE
19mph
High tide
5:44 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 12:04 am (0.5 ft)
Next high tide : in 2h 07m at 5:44 pm (2.9 ft)
Sunset today : 6:43 pm
Sunrise tomorrow : 6:34 am
Moon phase : Waxing Gibbous (83% 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 - Oct 1854

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:342.73:163.38:510.410:060.35:465:33Waxing Gibbous1Sun
2Mon3:453.04:213.410:080.210:550.15:475:31Waxing Gibbous2Mon
3Tue4:453.35:153.611:070.011:39-0.15:485:29Waxing Gibbous3Tue
4Wed5:373.66:043.611:59-0.15:495:28Full Moon4Wed
5Thu6:253.86:493.612:18-0.212:47-0.25:515:26Full Moon5Thu
6Fri7:103.97:333.512:54-0.31:32-0.25:525:24Full Moon6Fri
7Sat7:533.98:153.41:27-0.22:14-0.15:535:23Full Moon7Sat
8Sun8:343.88:573.11:57-0.22:520.05:545:21Waning Gibbous8Sun
9Mon9:153.69:402.92:260.03:280.25:555:19Waning Gibbous9Mon
10Tue9:553.310:252.62:580.24:060.55:565:18Waning Gibbous10Tue
11Wed10:383.011:142.43:340.44:560.75:575:16Waning Gibbous11Wed
12Thu11:272.74:160.76:290.95:585:15Third Quarter12Thu
13Fri12:102.312:232.65:080.87:470.95:595:13Third Quarter13Fri
14Sat1:112.21:292.56:161.08:500.96:005:11Third Quarter14Sat
15Sun2:212.22:492.57:551.09:420.86:015:10Third Quarter15Sun
16Mon3:272.33:512.69:200.810:230.66:025:08Waning Crescent16Mon
17Tue4:172.54:342.710:140.610:580.56:045:07Waning Crescent17Tue
18Wed4:562.85:102.910:590.411:280.36:055:05Waning Crescent18Wed
19Thu5:313.15:443.011:400.211:540.16:065:04Waning Crescent19Thu
20Fri6:063.46:203.112:200.16:075:02New Moon20Fri
21Sat6:433.66:593.212:200.012:59-0.16:085:01New Moon21Sat
22Sun7:213.87:403.212:49-0.11:39-0.16:094:59New Moon22Sun
23Mon8:033.88:243.11:23-0.22:19-0.16:104:58Waxing Crescent23Mon
24Tue8:483.89:113.02:01-0.23:010.06:124:57Waxing Crescent24Tue
25Wed9:363.710:022.92:43-0.13:490.16:134:55Waxing Crescent25Wed
26Thu10:313.511:002.83:300.14:520.36:144:54Waxing Crescent26Thu
27Fri11:333.44:250.26:250.46:154:52First Quarter27Fri
28Sat12:042.712:393.25:380.47:430.46:164:51First Quarter28Sat
29Sun1:122.71:493.17:310.58:470.36:174:50First Quarter29Sun
30Mon2:232.83:003.19:010.49:420.26:194:49Waxing Gibbous30Mon
31Tue3:323.14:033.210:070.210:290.06:204:47Waxing Gibbous31Tue
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 spring phase. Tonight's moon is 83% 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 maximum.

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 Waxing Gibbous (83% illuminated). This places Block Island, RI in a spring tide cycle, so tidal ranges are near their weekly maximum 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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