Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

68°
H 77°
L 65°
WSW
6mph
High tide
5:49 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 11:36 am (0.7 ft)
Next high tide : in 5m at 5:49 am (2.3 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

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 - May 1918

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:452.55:200.35:110.35:447:42Waning Gibbous1Wed
2Thu12:063.012:402.66:140.36:090.45:437:43Third Quarter2Thu
3Fri1:032.91:392.67:190.37:210.45:417:44Third Quarter3Fri
4Sat2:032.92:412.88:270.28:500.45:407:45Third Quarter4Sat
5Sun3:082.93:473.09:310.110:220.25:397:46Waning Crescent5Sun
6Mon4:162.94:513.410:29-0.111:300.05:387:47Waning Crescent6Mon
7Tue5:203.05:493.711:21-0.25:367:48Waning Crescent7Tue
8Wed6:173.26:423.912:27-0.212:10-0.45:357:49Waning Crescent8Wed
9Thu7:103.37:334.11:21-0.412:58-0.55:347:50New Moon9Thu
10Fri8:023.38:234.12:13-0.51:46-0.55:337:51New Moon10Fri
11Sat8:523.39:134.03:03-0.52:33-0.45:327:52New Moon11Sat
12Sun9:423.210:023.83:51-0.43:19-0.35:317:53Waxing Crescent12Sun
13Mon10:323.110:523.54:39-0.24:04-0.15:307:54Waxing Crescent13Mon
14Tue11:242.911:443.25:300.04:510.25:297:55Waxing Crescent14Tue
15Wed12:182.86:260.25:450.45:287:56Waxing Crescent15Wed
16Thu12:372.91:142.77:230.47:000.65:277:57First Quarter16Thu
17Fri1:302.62:102.68:150.58:190.75:267:58First Quarter17Fri
18Sat2:232.53:062.69:020.59:250.75:257:59First Quarter18Sat
19Sun3:202.34:042.69:460.510:240.75:248:00First Quarter19Sun
20Mon4:192.34:572.810:260.511:150.65:238:01Waxing Gibbous20Mon
21Tue5:122.35:412.911:020.55:228:02Waxing Gibbous21Tue
22Wed5:562.46:203.112:010.511:37 AM0.45:228:03Waxing Gibbous22Wed
23Thu6:352.56:563.212:440.312:120.35:218:04Waxing Gibbous23Thu
24Fri7:122.57:323.31:260.212:480.25:208:05Full Moon24Fri
25Sat7:502.68:103.42:070.11:260.15:198:06Full Moon25Sat
26Sun8:302.78:493.42:450.12:050.15:198:07Full Moon26Sun
27Mon9:112.89:303.43:210.12:460.15:188:07Full Moon27Mon
28Tue9:542.810:143.43:550.13:270.15:178:08Waning Gibbous28Tue
29Wed10:412.811:003.34:300.14:120.25:178:09Waning Gibbous29Wed
30Thu11:322.911:513.25:110.15:020.35:168:10Waning Gibbous30Thu
31Fri12:262.96:000.16:030.45:168:11Third Quarter31Fri
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 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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