Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

71°
H -°
L 66°
SSE
9mph
High tide
9:19 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 12, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 3:14 am (-0.1 ft)
Next high tide : in 5h 23m at 9:19 pm (3.4 ft)
Sunset today : 7:01 pm
Sunrise tomorrow : 6:24 am
Moon phase : New Moon (3% 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 - Feb 1872

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:582.35:340.25:420.07:015:06Third Quarter1Thu
2Fri12:372.712:562.26:460.26:390.07:005:07Third Quarter2Fri
3Sat1:372.82:022.28:190.27:450.06:595:08Third Quarter3Sat
4Sun2:462.93:162.29:450.09:01-0.16:585:10Waning Crescent4Sun
5Mon3:573.14:262.410:48-0.210:18-0.36:575:11Waning Crescent5Mon
6Tue5:013.45:262.711:43-0.411:23-0.56:565:12Waning Crescent6Tue
7Wed5:573.66:203.012:34-0.66:555:13New Moon7Wed
8Thu6:503.77:113.212:22-0.71:22-0.86:545:15New Moon8Thu
9Fri7:393.78:003.31:16-0.82:05-0.86:535:16New Moon9Fri
10Sat8:273.68:483.32:07-0.82:45-0.86:515:17New Moon10Sat
11Sun9:133.49:353.32:54-0.73:22-0.76:505:18Waxing Crescent11Sun
12Mon9:593.110:233.13:41-0.53:56-0.56:495:20Waxing Crescent12Mon
13Tue10:462.811:122.94:31-0.24:29-0.36:485:21Waxing Crescent13Tue
14Wed11:352.45:320.15:030.06:465:22First Quarter14Wed
15Thu12:032.712:262.16:430.35:450.26:455:23First Quarter15Thu
16Fri12:562.51:211.97:560.56:350.36:445:25First Quarter16Fri
17Sat1:572.32:301.89:050.57:370.46:425:26First Quarter17Sat
18Sun3:142.23:441.810:050.59:060.56:415:27Waxing Gibbous18Sun
19Mon4:212.34:421.910:560.410:170.36:405:28Waxing Gibbous19Mon
20Tue5:122.45:282.111:400.211:080.26:385:29Waxing Gibbous20Tue
21Wed5:532.66:072.312:200.16:375:31Waxing Gibbous21Wed
22Thu6:282.76:432.512:560.06:355:32Full Moon22Thu
23Fri7:002.87:172.612:32-0.11:28-0.26:345:33Full Moon23Fri
24Sat7:312.97:512.81:10-0.21:56-0.26:325:34Full Moon24Sat
25Sun8:032.98:262.91:45-0.32:18-0.36:315:35Full Moon25Sun
26Mon8:372.99:033.02:20-0.32:39-0.36:295:37Waning Gibbous26Mon
27Tue9:152.89:433.02:55-0.33:06-0.36:285:38Waning Gibbous27Tue
28Wed9:572.710:273.03:34-0.23:40-0.36:265:39Waning Gibbous28Wed
29Thu10:442.511:163.04:190.04:20-0.26:255:40Waning Gibbous29Thu
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 spring phase. Tonight's moon is 3% 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 New Moon (3% 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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