Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, July 11, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 41m at 10:48 am (0.0 ft)
Next high tide : 5:43 pm (3.7 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:23 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Feb 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:292.34:570.24:580.16:565:03Third Quarter1Sat
2Sun12:072.412:142.05:560.45:430.36:555:04Third Quarter2Sun
3Mon12:562.31:051.97:250.56:370.46:545:05Third Quarter3Mon
4Tue1:542.22:071.88:460.57:430.46:535:06Third Quarter4Tue
5Wed3:082.23:251.89:490.49:130.46:525:08Waning Crescent5Wed
6Thu4:122.34:262.010:410.310:190.26:515:09Waning Crescent6Thu
7Fri4:592.55:112.211:260.111:080.16:495:10Waning Crescent7Fri
8Sat5:392.75:502.412:06-0.16:485:12Waning Crescent8Sat
9Sun6:152.96:282.612:42-0.26:475:13New Moon9Sun
10Mon6:523.17:072.912:31-0.31:15-0.46:465:14New Moon10Mon
11Tue7:303.27:473.01:10-0.41:44-0.56:455:15New Moon11Tue
12Wed8:093.28:293.21:48-0.52:13-0.66:435:16New Moon12Wed
13Thu8:513.29:133.22:27-0.52:45-0.66:425:18Waxing Crescent13Thu
14Fri9:363.110:003.23:08-0.43:22-0.66:415:19Waxing Crescent14Fri
15Sat10:252.910:513.23:54-0.34:04-0.56:395:20Waxing Crescent15Sat
16Sun11:182.711:473.14:49-0.14:53-0.46:385:21First Quarter16Sun
17Mon12:172.56:080.05:52-0.26:375:23First Quarter17Mon
18Tue12:483.01:212.47:510.17:03-0.16:355:24First Quarter18Tue
19Wed1:562.92:322.49:090.08:36-0.16:345:25First Quarter19Wed
20Thu3:132.93:462.510:13-0.110:00-0.26:325:26Waxing Gibbous20Thu
21Fri4:223.04:482.811:08-0.211:02-0.36:315:27Waxing Gibbous21Fri
22Sat5:203.25:423.011:56-0.411:55-0.56:305:29Waxing Gibbous22Sat
23Sun6:093.36:313.212:40-0.56:285:30Full Moon23Sun
24Mon6:553.37:173.312:43-0.51:20-0.66:275:31Full Moon24Mon
25Tue7:373.38:003.31:26-0.61:54-0.66:255:32Full Moon25Tue
26Wed8:173.18:403.22:04-0.52:23-0.56:245:33Full Moon26Wed
27Thu8:553.09:193.12:37-0.42:47-0.46:225:35Waning Gibbous27Thu
28Fri9:322.79:572.93:08-0.23:10-0.26:215:36Waning Gibbous28Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 2:15 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 11% 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 Waning Crescent (11% 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