Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 10:27 pm (0.7 ft)
Next high tide : in 4h 05m at 3:45 pm (3.0 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 - Oct 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:113.911:353.14:18-0.25:410.16:426:29Waxing Crescent1Sat
2Sun12:103.65:090.16:570.36:436:27First Quarter2Sun
3Mon12:362.91:153.36:190.48:100.56:446:25First Quarter3Mon
4Tue1:402.72:223.18:060.59:160.56:456:24First Quarter4Tue
5Wed2:482.73:313.09:280.610:140.56:476:22First Quarter5Wed
6Thu3:582.74:362.910:330.511:040.56:486:20Waxing Gibbous6Thu
7Fri4:592.95:292.911:270.511:440.46:496:19Waxing Gibbous7Fri
8Sat5:503.06:142.912:120.46:506:17Waxing Gibbous8Sat
9Sun6:333.26:533.012:190.312:510.36:516:15Waxing Gibbous9Sun
10Mon7:103.37:293.012:480.21:270.36:526:14Full Moon10Mon
11Tue7:453.48:023.01:140.22:010.26:536:12Full Moon11Tue
12Wed8:163.48:363.01:400.12:320.26:546:11Full Moon12Wed
13Thu8:463.39:092.92:080.13:020.26:556:09Full Moon13Thu
14Fri9:183.39:432.82:390.23:310.36:566:07Waning Gibbous14Fri
15Sat9:513.210:212.63:130.34:010.46:576:06Waning Gibbous15Sat
16Sun10:293.011:022.53:480.44:360.66:586:04Waning Gibbous16Sun
17Mon11:122.911:502.44:280.55:190.77:006:03Waning Gibbous17Mon
18Tue12:022.85:140.66:160.87:016:01Third Quarter18Tue
19Wed12:452.412:592.86:100.77:410.87:026:00Third Quarter19Wed
20Thu1:442.52:002.87:190.79:040.67:035:58Third Quarter20Thu
21Fri2:462.63:052.98:390.69:590.47:045:57Third Quarter21Fri
22Sat3:512.94:123.010:040.410:460.27:055:55Waning Crescent22Sat
23Sun4:523.35:133.211:120.111:30-0.17:065:54Waning Crescent23Sun
24Mon5:473.76:083.412:08-0.27:075:53Waning Crescent24Mon
25Tue6:374.07:003.512:12-0.31:00-0.47:095:51New Moon25Tue
26Wed7:274.37:503.612:55-0.41:52-0.57:105:50New Moon26Wed
27Thu8:164.48:403.51:40-0.52:43-0.67:115:48New Moon27Thu
28Fri9:074.39:313.42:27-0.53:34-0.57:125:47Waxing Crescent28Fri
29Sat9:584.110:233.23:13-0.44:25-0.37:135:46Waxing Crescent29Sat
30Sun10:523.811:183.04:01-0.25:230.07:145:45Waxing Crescent30Sun
31Mon11:503.54:540.16:300.27:165:43Waxing Crescent31Mon
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 7:06 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 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