Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

62°
H 71°
L 65°
SW
5mph
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 3h 53m 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 - Feb 1864

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:492.51:102.17:020.46:540.17:015:06Third Quarter1Mon
2Tue1:512.62:172.18:410.38:030.07:005:07Third Quarter2Tue
3Wed3:022.83:302.310:000.19:21-0.16:595:08Waning Crescent3Wed
4Thu4:113.04:362.610:56-0.210:33-0.46:585:10Waning Crescent4Thu
5Fri5:103.35:332.911:46-0.511:35-0.66:575:11Waning Crescent5Fri
6Sat6:033.66:263.212:33-0.76:565:12New Moon6Sat
7Sun6:543.87:173.512:31-0.81:18-0.96:555:13New Moon7Sun
8Mon7:443.88:063.61:25-1.02:01-1.06:545:15New Moon8Mon
9Tue8:323.78:553.62:17-1.02:42-1.06:535:16Waxing Crescent9Tue
10Wed9:213.59:453.53:07-0.83:21-0.86:525:17Waxing Crescent10Wed
11Thu10:103.110:373.34:00-0.64:00-0.66:505:18Waxing Crescent11Thu
12Fri11:022.811:323.15:02-0.34:43-0.46:495:20Waxing Crescent12Fri
13Sat11:582.56:160.05:33-0.16:485:21First Quarter13Sat
14Sun12:302.812:562.27:290.26:360.16:465:22First Quarter14Sun
15Mon1:352.62:022.18:390.38:020.36:455:23First Quarter15Mon
16Tue2:482.43:142.09:420.39:210.36:445:24Waxing Gibbous16Tue
17Wed3:582.44:172.110:360.310:200.26:425:26Waxing Gibbous17Wed
18Thu4:542.55:092.311:210.211:070.16:415:27Waxing Gibbous18Thu
19Fri5:392.65:532.412:000.16:405:28Waxing Gibbous19Fri
20Sat6:172.76:322.612:35-0.16:385:29Full Moon20Sat
21Sun6:512.87:072.712:26-0.11:07-0.26:375:31Full Moon21Sun
22Mon7:212.87:402.81:01-0.21:35-0.26:355:32Full Moon22Mon
23Tue7:502.88:112.91:34-0.31:58-0.36:345:33Full Moon23Tue
24Wed8:202.88:432.92:05-0.22:18-0.36:335:34Full Moon24Wed
25Thu8:522.79:162.92:36-0.22:42-0.26:315:35Waning Gibbous25Thu
26Fri9:282.69:532.83:08-0.13:12-0.26:305:36Waning Gibbous26Fri
27Sat10:082.510:362.83:450.03:47-0.16:285:38Waning Gibbous27Sat
28Sun10:542.311:252.74:270.14:290.06:265:39Third Quarter28Sun
29Mon11:472.25:200.25:210.16:255:40Third Quarter29Mon
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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