Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 19m at 10:27 pm (0.7 ft)
Next high tide (tomorrow) : 4:00 am (2.3 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:14 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Feb 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:253.06:412.712:07-0.212:49-0.26:575:02New Moon1Tue
2Wed7:063.07:222.812:48-0.21:24-0.36:565:03New Moon2Wed
3Thu7:433.07:592.81:24-0.31:54-0.36:555:04New Moon3Thu
4Fri8:172.98:342.81:55-0.22:19-0.36:545:06New Moon4Fri
5Sat8:492.89:072.72:24-0.22:41-0.36:535:07Waxing Crescent5Sat
6Sun9:212.79:392.72:53-0.13:05-0.26:515:08Waxing Crescent6Sun
7Mon9:542.510:122.63:240.03:34-0.16:505:10Waxing Crescent7Mon
8Tue10:302.310:482.54:000.24:070.06:495:11Waxing Crescent8Tue
9Wed11:112.111:312.44:420.34:470.16:485:12First Quarter9Wed
10Thu11:582.05:340.55:340.26:475:13First Quarter10Thu
11Fri12:202.312:521.96:450.66:300.36:465:14First Quarter11Fri
12Sat1:172.31:561.98:510.57:350.36:445:16First Quarter12Sat
13Sun2:272.43:102.010:000.48:510.16:435:17Waxing Gibbous13Sun
14Mon3:422.64:182.210:500.110:06-0.16:425:18Waxing Gibbous14Mon
15Tue4:442.95:132.611:34-0.211:07-0.46:405:19Waxing Gibbous15Tue
16Wed5:363.26:023.012:15-0.46:395:21Waxing Gibbous16Wed
17Thu6:253.46:513.312:01-0.612:55-0.76:385:22Full Moon17Thu
18Fri7:123.67:383.612:54-0.81:33-0.86:365:23Full Moon18Fri
19Sat7:593.68:263.71:44-0.92:10-0.96:355:24Full Moon19Sat
20Sun8:463.49:143.72:33-0.92:47-0.96:345:26Waning Gibbous20Sun
21Mon9:353.210:053.63:23-0.83:26-0.76:325:27Waning Gibbous21Mon
22Tue10:262.910:593.44:17-0.54:08-0.56:315:28Waning Gibbous22Tue
23Wed11:212.611:583.15:25-0.24:57-0.36:295:29Third Quarter23Wed
24Thu12:202.46:450.06:010.06:285:30Third Quarter24Thu
25Fri1:022.91:252.28:020.27:420.26:265:31Third Quarter25Fri
26Sat2:142.72:392.19:120.29:110.26:255:33Third Quarter26Sat
27Sun3:302.63:522.210:120.210:170.26:235:34Waning Crescent27Sun
28Mon4:322.64:502.411:020.111:100.16:225:35Waning Crescent28Mon
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 1:13 am — 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 transitional phase. Tonight's moon is 67% 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 First Quarter (67% 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