Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

52°
H 53°
L 41°
NNW
13mph
Low tide
5:33 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, October 17, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 34m at 5:33 am (0.8 ft)
Next high tide : 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

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 - Apr 1806

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:433.26:093.612:01-0.55:346:14Full Moon1Tue
2Wed6:313.36:563.812:32-0.612:41-0.65:326:15Full Moon2Wed
3Thu7:183.37:413.81:19-0.61:19-0.65:306:16Full Moon3Thu
4Fri8:023.28:253.72:03-0.61:53-0.55:296:17Full Moon4Fri
5Sat8:463.09:083.52:44-0.42:25-0.35:276:18Waning Gibbous5Sat
6Sun9:292.89:523.23:22-0.22:56-0.15:256:19Waning Gibbous6Sun
7Mon10:142.610:382.94:000.03:310.15:246:20Waning Gibbous7Mon
8Tue11:012.411:272.64:440.34:110.35:226:21Waning Gibbous8Tue
9Wed11:532.25:470.55:010.65:206:23Third Quarter9Wed
10Thu12:212.412:492.17:050.66:060.75:196:24Third Quarter10Thu
11Fri1:212.31:512.18:100.67:590.75:176:25Third Quarter11Fri
12Sat2:302.23:012.19:060.69:200.75:166:26Third Quarter12Sat
13Sun3:362.33:592.39:530.510:160.55:146:27Waning Crescent13Sun
14Mon4:252.44:432.610:310.311:020.35:126:28Waning Crescent14Mon
15Tue5:052.55:192.811:040.211:450.15:116:29Waning Crescent15Tue
16Wed5:412.65:543.111:340.05:096:30Waning Crescent16Wed
17Thu6:172.86:303.312:250.012:05-0.15:086:31New Moon17Thu
18Fri6:552.97:083.51:04-0.212:37-0.25:066:32New Moon18Fri
19Sat7:352.97:493.61:41-0.21:13-0.35:056:33New Moon19Sat
20Sun8:172.98:323.62:17-0.21:52-0.35:036:34Waxing Crescent20Sun
21Mon9:022.99:183.52:54-0.22:34-0.35:026:35Waxing Crescent21Mon
22Tue9:512.810:093.43:36-0.13:19-0.25:006:36Waxing Crescent22Tue
23Wed10:452.811:053.24:270.14:110.04:596:37Waxing Crescent23Wed
24Thu11:442.75:390.25:140.14:576:38First Quarter24Thu
25Fri12:063.112:472.87:010.26:360.24:566:40First Quarter25Fri
26Sat1:093.01:532.98:080.28:160.24:546:41First Quarter26Sat
27Sun2:172.93:013.19:080.19:340.14:536:42Waxing Gibbous27Sun
28Mon3:272.94:043.310:000.010:360.04:526:43Waxing Gibbous28Mon
29Tue4:282.94:593.510:46-0.111:30-0.14:506:44Waxing Gibbous29Tue
30Wed5:223.05:493.711:29-0.24:496:45Waxing Gibbous30Wed
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 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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