Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

69°
H -°
L 65°
WSW
6mph
Low tide
12:42 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 1h 38m at 12:42 am (0.6 ft)
Next high tide (tomorrow) : 6:31 am (2.5 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waxing Gibbous (88% 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 - Oct 1916

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:503.510:132.82:570.13:540.35:425:29Waxing Crescent1Sun
2Mon10:433.411:102.73:420.24:530.55:435:27Waxing Crescent2Mon
3Tue11:443.34:360.36:250.65:445:25First Quarter3Tue
4Wed12:132.712:503.25:450.57:520.55:455:24First Quarter4Wed
5Thu1:202.72:003.27:210.58:580.45:475:22First Quarter5Thu
6Fri2:322.93:113.29:030.49:530.25:485:20Waxing Gibbous6Fri
7Sat3:413.14:133.310:110.210:400.05:495:19Waxing Gibbous7Sat
8Sun4:403.45:073.411:070.011:21-0.15:505:17Waxing Gibbous8Sun
9Mon5:313.75:553.511:58-0.15:515:15Full Moon9Mon
10Tue6:173.96:413.512:00-0.212:46-0.25:525:14Full Moon10Tue
11Wed7:024.07:253.412:36-0.31:30-0.25:535:12Full Moon11Wed
12Thu7:453.98:093.21:10-0.22:11-0.15:545:11Full Moon12Thu
13Fri8:273.78:513.01:43-0.12:490.15:555:09Waning Gibbous13Fri
14Sat9:093.59:352.82:160.13:260.35:565:07Waning Gibbous14Sat
15Sun9:513.210:212.62:510.34:050.55:575:06Waning Gibbous15Sun
16Mon10:372.911:132.43:300.55:030.75:585:04Waning Gibbous16Mon
17Tue11:282.74:150.76:330.96:005:03Third Quarter17Tue
18Wed12:102.312:262.55:110.97:420.96:015:01Third Quarter18Wed
19Thu1:102.21:292.56:290.98:380.86:025:00Third Quarter19Thu
20Fri2:152.32:372.58:120.99:250.76:034:58Third Quarter20Fri
21Sat3:162.43:352.59:210.810:040.66:044:57Waning Crescent21Sat
22Sun4:052.74:192.610:130.610:360.56:054:55Waning Crescent22Sun
23Mon4:442.94:572.810:580.411:040.36:064:54Waning Crescent23Mon
24Tue5:203.25:332.911:390.211:310.16:084:53Waning Crescent24Tue
25Wed5:563.56:113.012:180.06:094:51New Moon25Wed
26Thu6:343.76:523.012:010.012:58-0.16:104:50New Moon26Thu
27Fri7:143.87:353.112:35-0.11:38-0.16:114:48New Moon27Fri
28Sat7:583.88:203.01:14-0.22:18-0.16:124:47Waxing Crescent28Sat
29Sun8:443.89:083.01:56-0.23:010.06:134:46Waxing Crescent29Sun
30Mon9:353.610:012.92:41-0.13:500.16:154:45Waxing Crescent30Mon
31Tue10:303.511:002.83:300.14:540.36:164:43Waxing Crescent31Tue
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 spring phase. Tonight's moon is 88% 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 Waxing Gibbous (88% 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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