Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

57°
H -°
L 56°
S
2mph
Low tide
4:40 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 23m at 4:40 am (0.4 ft)
Next high tide : 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

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 1864

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:362.96:583.312:480.312:250.34:457:06New Moon1Mon
2Tue7:183.07:343.31:230.21:020.34:467:05New Moon2Tue
3Wed7:563.18:073.21:550.21:370.24:477:04New Moon3Wed
4Thu8:323.18:383.12:220.22:100.34:487:03Waxing Crescent4Thu
5Fri9:063.09:103.02:450.22:440.34:497:02Waxing Crescent5Fri
6Sat9:403.09:442.93:070.23:200.44:507:00Waxing Crescent6Sat
7Sun10:162.910:222.73:340.33:580.64:516:59Waxing Crescent7Sun
8Mon10:562.911:042.64:070.44:430.74:526:58Waxing Crescent8Mon
9Tue11:392.911:522.54:470.55:370.84:536:57First Quarter9Tue
10Wed12:282.95:350.56:420.84:546:55First Quarter10Wed
11Thu12:462.51:242.96:300.58:050.74:556:54First Quarter11Thu
12Fri1:462.52:283.17:320.59:270.64:566:53Waxing Gibbous12Fri
13Sat2:542.63:363.38:420.410:260.44:576:51Waxing Gibbous13Sat
14Sun4:032.84:383.59:550.211:160.14:586:50Waxing Gibbous14Sun
15Mon5:023.15:333.810:59-0.14:596:49Waxing Gibbous15Mon
16Tue5:563.46:254.012:03-0.211:58 AM-0.35:006:47Full Moon16Tue
17Wed6:483.77:154.112:48-0.412:54-0.45:016:46Full Moon17Wed
18Thu7:394.08:054.11:32-0.51:49-0.55:026:44Full Moon18Thu
19Fri8:294.18:543.92:14-0.52:42-0.45:036:43Waning Gibbous19Fri
20Sat9:194.09:453.72:56-0.53:36-0.35:046:41Waning Gibbous20Sat
21Sun10:123.910:373.43:37-0.34:370.05:056:40Waning Gibbous21Sun
22Mon11:073.711:333.14:22-0.15:500.25:066:38Third Quarter22Mon
23Tue12:063.55:150.17:030.45:076:37Third Quarter23Tue
24Wed12:322.81:083.26:210.48:120.65:086:35Third Quarter24Wed
25Thu1:342.62:163.07:390.59:150.65:096:34Third Quarter25Thu
26Fri2:422.63:273.08:550.610:110.65:106:32Waning Crescent26Fri
27Sat3:482.64:263.09:570.610:580.65:116:30Waning Crescent27Sat
28Sun4:442.75:153.010:470.511:390.55:126:29Waning Crescent28Sun
29Mon5:312.95:563.111:290.45:136:27Waning Crescent29Mon
30Tue6:133.06:323.112:150.412:070.35:146:26New Moon30Tue
31Wed6:513.17:053.212:480.312:430.35:156:24New Moon31Wed
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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