Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

70°
H 71°
L 65°
SW
10mph
High tide
11:48 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 5:45 pm (0.7 ft)
Next high tide : in 55m at 11:48 am (3.0 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:28 am
Moon phase : Waxing Crescent (30% 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 - Nov 1863

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:002.711:432.43:550.65:400.76:214:46Third Quarter1Sun
2Mon11:502.64:460.76:550.86:224:45Third Quarter2Mon
3Tue12:372.312:432.45:530.97:530.86:234:44Third Quarter3Tue
4Wed1:342.31:392.47:270.98:430.76:244:43Third Quarter4Wed
5Thu2:332.42:412.48:490.89:250.66:264:41Waning Crescent5Thu
6Fri3:282.63:382.59:480.610:010.56:274:40Waning Crescent6Fri
7Sat4:132.94:252.610:350.410:320.36:284:39Waning Crescent7Sat
8Sun4:533.15:072.711:180.211:040.16:294:38Waning Crescent8Sun
9Mon5:323.45:492.912:000.06:304:37New Moon9Mon
10Tue6:133.66:323.012:40-0.16:324:36New Moon10Tue
11Wed6:553.87:163.112:16-0.21:22-0.26:334:35New Moon11Wed
12Thu7:403.98:033.112:58-0.32:03-0.36:344:34New Moon12Thu
13Fri8:273.88:513.11:42-0.32:46-0.26:354:33Waxing Crescent13Fri
14Sat9:173.79:433.12:28-0.23:33-0.16:364:32Waxing Crescent14Sat
15Sun10:113.610:403.03:18-0.14:280.06:384:31Waxing Crescent15Sun
16Mon11:093.411:413.04:150.15:390.16:394:31First Quarter16Mon
17Tue12:103.25:340.26:510.16:404:30First Quarter17Tue
18Wed12:453.01:133.07:210.37:540.16:414:29First Quarter18Wed
19Thu1:503.12:192.98:410.38:510.16:424:28First Quarter19Thu
20Fri2:573.23:252.89:460.29:430.06:444:28Waxing Gibbous20Fri
21Sat3:593.44:242.810:420.110:29-0.16:454:27Waxing Gibbous21Sat
22Sun4:533.55:162.911:330.011:11-0.16:464:26Waxing Gibbous22Sun
23Mon5:413.66:032.912:19-0.16:474:26Full Moon23Mon
24Tue6:263.66:482.91:01-0.16:484:25Full Moon24Tue
25Wed7:093.57:312.912:26-0.11:40-0.16:494:25Full Moon25Wed
26Thu7:493.48:122.91:01-0.12:160.06:504:24Full Moon26Thu
27Fri8:273.28:532.81:360.02:490.16:524:24Waning Gibbous27Fri
28Sat9:043.19:342.62:120.13:200.26:534:23Waning Gibbous28Sat
29Sun9:412.910:172.52:500.23:530.36:544:23Waning Gibbous29Sun
30Mon10:202.711:032.43:300.44:310.46:554:22Waning Gibbous30Mon
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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 Crescent (30% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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