Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 49m at 7:43 am (0.2 ft)
Next high tide : 2:30 pm (3.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:21 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:442.72:143.27:210.49:290.56:426:29Third Quarter1Tue
2Wed2:532.83:273.29:010.410:290.36:436:27Third Quarter2Wed
3Thu4:043.04:373.310:270.311:200.26:446:26Waning Crescent3Thu
4Fri5:093.35:363.411:300.16:456:24Waning Crescent4Fri
5Sat6:033.66:273.412:040.012:24-0.16:466:22Waning Crescent5Sat
6Sun6:523.87:133.412:45-0.11:13-0.26:476:21New Moon6Sun
7Mon7:383.97:583.41:22-0.21:59-0.26:486:19New Moon7Mon
8Tue8:224.08:403.31:56-0.22:41-0.16:506:17New Moon8Tue
9Wed9:043.89:223.12:27-0.13:200.06:516:16New Moon9Wed
10Thu9:453.610:043.02:580.03:550.16:526:14Waxing Crescent10Thu
11Fri10:273.410:462.73:290.24:290.36:536:12Waxing Crescent11Fri
12Sat11:103.111:322.54:040.45:080.66:546:11Waxing Crescent12Sat
13Sun11:572.84:430.66:040.86:556:09First Quarter13Sun
14Mon12:222.412:512.65:290.87:390.96:566:08First Quarter14Mon
15Tue1:182.21:492.56:300.98:490.96:576:06First Quarter15Tue
16Wed2:192.22:542.58:031.09:450.86:586:05First Quarter16Wed
17Thu3:252.33:592.59:460.910:310.76:596:03First Quarter17Thu
18Fri4:262.54:522.610:460.711:090.57:006:02Waxing Gibbous18Fri
19Sat5:132.75:342.711:330.511:410.47:026:00Waxing Gibbous19Sat
20Sun5:513.06:122.912:160.37:035:59Waxing Gibbous20Sun
21Mon6:283.36:503.012:100.212:560.17:045:57Waxing Gibbous21Mon
22Tue7:053.67:293.112:400.01:360.07:055:56Full Moon22Tue
23Wed7:453.88:113.11:13-0.12:15-0.17:065:54Full Moon23Wed
24Thu8:283.98:553.11:51-0.22:55-0.17:075:53Full Moon24Thu
25Fri9:133.99:423.12:32-0.23:37-0.17:085:51Waning Gibbous25Fri
26Sat10:013.810:323.03:15-0.24:230.07:105:50Waning Gibbous26Sat
27Sun9:543.610:282.93:02-0.14:190.26:114:49Waning Gibbous27Sun
28Mon10:523.411:292.93:550.15:400.36:124:47Third Quarter28Mon
29Tue11:553.35:000.36:590.36:134:46Third Quarter29Tue
30Wed12:342.91:013.16:340.48:040.36:144:45Third Quarter30Wed
31Thu1:413.02:083.08:120.49:010.26:154:43Third Quarter31Thu
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 11:06 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 neap phase. Tonight's moon is 41% 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 minimum.

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 Third Quarter (41% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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