Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

68°
H 73°
L 57°
W
9mph
High tide
10:24 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, September 14, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 4:26 pm (0.3 ft)
Next high tide : in 6h 15m at 10:24 am (3.5 ft)
Sunset today : 6:57 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Crescent (14% 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 - Oct 1868

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:553.37:143.212:420.11:080.25:475:32Full Moon1Thu
2Fri7:283.47:483.21:080.11:410.15:485:30Full Moon2Fri
3Sat8:023.48:253.11:350.02:120.25:495:28Full Moon3Sat
4Sun8:403.49:053.02:060.12:450.25:505:27Waning Gibbous4Sun
5Mon9:213.49:492.92:410.13:220.35:515:25Waning Gibbous5Mon
6Tue10:063.310:392.83:200.24:060.45:525:23Waning Gibbous6Tue
7Wed10:593.211:362.74:060.35:030.55:535:22Third Quarter7Wed
8Thu11:573.25:010.46:320.65:545:20Third Quarter8Thu
9Fri12:372.71:013.26:090.48:110.55:555:18Third Quarter9Fri
10Sat1:432.82:093.27:300.49:160.35:575:17Third Quarter10Sat
11Sun2:533.03:213.39:040.310:100.15:585:15Waning Crescent11Sun
12Mon3:593.34:243.510:150.110:58-0.15:595:14Waning Crescent12Mon
13Tue4:563.65:193.611:13-0.211:42-0.36:005:12Waning Crescent13Tue
14Wed5:473.96:103.712:05-0.36:015:10New Moon14Wed
15Thu6:364.16:583.712:24-0.412:55-0.46:025:09New Moon15Thu
16Fri7:234.17:453.61:04-0.41:43-0.46:035:07New Moon16Fri
17Sat8:094.18:313.41:41-0.32:28-0.36:045:06Waxing Crescent17Sat
18Sun8:553.99:173.22:16-0.23:10-0.16:055:04Waxing Crescent18Sun
19Mon9:423.610:042.92:500.03:540.16:075:03Waxing Crescent19Mon
20Tue10:313.310:562.73:260.34:460.46:085:01Waxing Crescent20Tue
21Wed11:243.011:512.54:070.55:570.66:095:00First Quarter21Wed
22Thu12:212.84:580.77:080.76:104:59First Quarter22Thu
23Fri12:512.41:222.66:170.98:090.76:114:57First Quarter23Fri
24Sat1:542.32:282.58:130.99:020.76:124:56First Quarter24Sat
25Sun3:012.43:302.69:180.89:480.66:134:54Waxing Gibbous25Sun
26Mon3:572.54:202.710:090.710:270.56:154:53Waxing Gibbous26Mon
27Tue4:402.74:592.810:530.511:010.36:164:52Waxing Gibbous27Tue
28Wed5:153.05:342.911:330.311:310.26:174:50Waxing Gibbous28Wed
29Thu5:483.26:083.012:110.26:184:49Full Moon29Thu
30Fri6:213.46:433.012:480.16:194:48Full Moon30Fri
31Sat6:573.57:213.112:290.01:230.06:214:46Full Moon31Sat
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 spring phase. Tonight's moon is 14% 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 Crescent (14% 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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