Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

64°
H -°
L 59°
E
9mph
Low tide
9:44 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 5h 04m at 9:44 pm (1.0 ft)
Next high tide (tomorrow) : 3:01 am (2.1 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% 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 - Jan 1859

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:382.95:532.212:070.27:164:32Waning Crescent1Sat
2Sun6:212.96:352.312:460.17:164:32New Moon2Sun
3Mon7:002.97:132.412:140.11:230.07:164:33New Moon3Mon
4Tue7:362.97:502.412:510.01:570.07:164:34New Moon4Tue
5Wed8:092.98:252.51:270.02:29-0.17:164:35New Moon5Wed
6Thu8:412.99:002.42:020.02:57-0.17:164:36Waxing Crescent6Thu
7Fri9:142.89:362.42:360.13:220.07:164:37Waxing Crescent7Fri
8Sat9:482.610:142.43:120.23:490.07:154:38Waxing Crescent8Sat
9Sun10:272.510:562.53:520.34:210.07:154:39Waxing Crescent9Sun
10Mon11:112.311:412.54:380.45:000.17:154:40First Quarter10Mon
11Tue12:002.25:350.45:460.17:154:41First Quarter11Tue
12Wed12:312.612:552.16:450.46:390.17:154:42First Quarter12Wed
13Thu1:272.71:592.18:190.47:390.07:144:43First Quarter13Thu
14Fri2:322.83:102.19:450.28:47-0.17:144:44Waxing Gibbous14Fri
15Sat3:433.04:192.310:46-0.19:57-0.37:134:46Waxing Gibbous15Sat
16Sun4:473.35:182.611:40-0.311:01-0.57:134:47Waxing Gibbous16Sun
17Mon5:453.56:132.912:31-0.57:134:48Full Moon17Mon
18Tue6:383.77:053.112:01-0.71:20-0.77:124:49Full Moon18Tue
19Wed7:303.87:553.312:58-0.82:05-0.87:114:50Full Moon19Wed
20Thu8:193.78:453.41:52-0.92:47-0.87:114:51Waning Gibbous20Thu
21Fri9:073.59:353.32:44-0.83:27-0.77:104:53Waning Gibbous21Fri
22Sat9:553.210:263.33:35-0.64:06-0.57:104:54Waning Gibbous22Sat
23Sun10:452.911:203.14:31-0.34:45-0.37:094:55Waning Gibbous23Sun
24Mon11:362.55:380.05:26-0.17:084:56Third Quarter24Mon
25Tue12:142.912:292.26:520.26:110.17:074:57Third Quarter25Tue
26Wed1:122.71:271.98:040.47:050.37:074:59Third Quarter26Wed
27Thu2:172.52:371.89:130.48:240.47:065:00Third Quarter27Thu
28Fri3:292.43:501.810:130.49:440.47:055:01Waning Crescent28Fri
29Sat4:322.54:491.911:030.310:410.37:045:02Waning Crescent29Sat
30Sun5:232.65:362.111:470.211:280.27:035:04Waning Crescent30Sun
31Mon6:052.76:172.212:260.17:025:05Waning Crescent31Mon
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 58% 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 (58% 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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