Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

50°
H 52°
L 41°
NNW
16mph
High tide
12:47 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, October 17, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 7:48 pm (0.9 ft)
Next high tide : in 6h 10m at 12:47 pm (2.6 ft)
Sunset today : 6:02 pm
Sunrise tomorrow : 7:00 am
Moon phase : First Quarter (41% 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
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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 1806

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:243.45:523.012:08-0.57:025:06Waxing Gibbous1Sat
2Sun6:183.66:443.312:55-0.87:015:07Full Moon2Sun
3Mon7:083.77:343.512:45-0.91:39-0.96:595:09Full Moon3Mon
4Tue7:573.78:233.61:38-0.92:20-0.96:585:10Full Moon4Tue
5Wed8:443.59:113.62:28-0.92:58-0.86:575:11Waning Gibbous5Wed
6Thu9:313.310:003.43:17-0.73:34-0.76:565:12Waning Gibbous6Thu
7Fri10:192.910:513.24:08-0.44:10-0.46:555:14Waning Gibbous7Fri
8Sat11:092.611:452.95:06-0.14:47-0.26:545:15Third Quarter8Sat
9Sun12:012.36:160.15:310.16:535:16Third Quarter9Sun
10Mon12:422.712:582.07:290.36:270.36:525:17Third Quarter10Mon
11Tue1:462.52:041.98:400.47:590.46:505:19Third Quarter11Tue
12Wed3:002.33:211.89:440.59:280.46:495:20Waning Crescent12Wed
13Thu4:082.44:251.910:370.410:270.36:485:21Waning Crescent13Thu
14Fri5:012.55:142.111:210.311:140.26:475:22Waning Crescent14Fri
15Sat5:442.65:562.312:000.16:455:23Waning Crescent15Sat
16Sun6:212.76:322.512:35-0.16:445:25New Moon16Sun
17Mon6:542.87:062.612:33-0.11:07-0.26:435:26New Moon17Mon
18Tue7:242.97:372.81:08-0.21:34-0.36:415:27New Moon18Tue
19Wed7:542.98:092.91:41-0.21:57-0.36:405:28New Moon19Wed
20Thu8:262.88:422.92:12-0.22:20-0.36:385:29Waxing Crescent20Thu
21Fri9:002.79:172.92:42-0.22:46-0.36:375:31Waxing Crescent21Fri
22Sat9:382.69:572.93:14-0.13:18-0.36:355:32Waxing Crescent22Sat
23Sun10:202.510:422.93:520.03:56-0.26:345:33Waxing Crescent23Sun
24Mon11:102.311:332.84:380.14:41-0.16:335:34First Quarter24Mon
25Tue12:062.25:360.35:360.06:315:35First Quarter25Tue
26Wed12:322.81:092.27:010.36:420.06:305:37First Quarter26Wed
27Thu1:392.82:202.38:560.28:010.06:285:38First Quarter27Thu
28Fri2:552.83:352.510:050.09:33-0.16:265:39Waxing Gibbous28Fri
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.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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 41% 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 (41% 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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