Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

59°
H 64°
L 56°
NE
15mph
Low tide
11:17 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 47m at 11:17 am (0.7 ft)
Next high tide : 5:44 pm (2.9 ft)
Sunset today : 6:43 pm
Sunrise tomorrow : 6:34 am
Moon phase : Waxing Gibbous (83% 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
Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
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 - Aug 1855

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:483.710:123.63:37-0.33:54-0.14:457:07Waning Gibbous1Wed
2Thu10:413.611:053.34:20-0.25:010.14:467:06Waning Gibbous2Thu
3Fri11:373.65:05-0.16:160.34:467:05Third Quarter3Fri
4Sat12:003.012:343.45:530.17:290.44:477:04Third Quarter4Sat
5Sun12:562.71:333.36:440.38:380.64:487:03Third Quarter5Sun
6Mon1:572.52:393.17:410.59:420.64:497:01Third Quarter6Mon
7Tue3:052.43:483.18:490.610:390.64:507:00Waning Crescent7Tue
8Wed4:102.44:483.19:560.611:280.64:516:59Waning Crescent8Wed
9Thu5:062.55:383.110:510.54:526:58Waning Crescent9Thu
10Fri5:542.66:223.112:120.511:38 AM0.54:536:56Waning Crescent10Fri
11Sat6:372.87:003.212:510.412:190.44:546:55New Moon11Sat
12Sun7:172.97:353.21:270.312:580.34:556:54New Moon12Sun
13Mon7:552.98:063.21:590.31:350.34:566:52New Moon13Mon
14Tue8:303.08:373.12:270.22:100.34:576:51New Moon14Tue
15Wed9:043.09:083.02:500.22:440.44:586:50Waxing Crescent15Wed
16Thu9:383.09:412.93:110.33:200.55:006:48Waxing Crescent16Thu
17Fri10:132.910:192.73:350.33:590.65:016:47Waxing Crescent17Fri
18Sat10:522.911:022.64:050.44:430.75:026:45Waxing Crescent18Sat
19Sun11:352.911:502.54:430.55:370.85:036:44First Quarter19Sun
20Mon12:253.05:290.56:440.85:046:42First Quarter20Mon
21Tue12:452.41:213.06:240.68:100.75:056:41First Quarter21Tue
22Wed1:472.42:283.17:270.59:340.65:066:39Waxing Gibbous22Wed
23Thu2:592.53:403.38:400.410:350.45:076:38Waxing Gibbous23Thu
24Fri4:092.74:453.69:560.211:270.15:086:36Waxing Gibbous24Fri
25Sat5:093.05:413.811:030.05:096:35Waxing Gibbous25Sat
26Sun6:033.36:334.012:15-0.112:03-0.25:106:33Full Moon26Sun
27Mon6:553.67:234.11:00-0.31:00-0.45:116:32Full Moon27Mon
28Tue7:453.88:114.01:43-0.41:55-0.45:126:30Full Moon28Tue
29Wed8:344.08:593.82:23-0.52:47-0.45:136:29Waning Gibbous29Wed
30Thu9:234.09:483.53:01-0.43:40-0.25:146:27Waning Gibbous30Thu
31Fri10:143.810:393.23:38-0.24:400.15:156:25Waning Gibbous31Fri
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 83% 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 (83% 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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