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 3h 36m 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 - Mar 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:092.510:352.73:39-0.13:38-0.16:195:37Waning Gibbous1Sat
2Sun10:482.311:162.54:150.14:130.16:175:38Waning Gibbous2Sun
3Mon11:312.15:000.34:560.36:165:39Third Quarter3Mon
4Tue12:002.312:181.96:000.55:480.46:145:40Third Quarter4Tue
5Wed12:512.21:121.97:420.66:500.56:135:42Third Quarter5Wed
6Thu1:532.22:201.99:060.58:100.56:115:43Third Quarter6Thu
7Fri3:122.33:362.010:040.49:470.46:095:44Waning Crescent7Fri
8Sat4:162.44:322.310:500.210:440.16:085:45Waning Crescent8Sat
9Sun6:022.76:172.612:290.07:066:46Waning Crescent9Sun
10Mon6:432.96:592.912:30-0.11:04-0.27:056:47Waning Crescent10Mon
11Tue7:233.17:403.21:13-0.31:37-0.47:036:48New Moon11Tue
12Wed8:053.38:233.41:56-0.52:10-0.67:016:49New Moon12Wed
13Thu8:483.39:073.62:38-0.62:44-0.77:006:51New Moon13Thu
14Fri9:323.39:533.63:20-0.63:21-0.76:586:52Waxing Crescent14Fri
15Sat10:193.210:413.64:03-0.64:01-0.66:566:53Waxing Crescent15Sat
16Sun11:093.011:333.44:50-0.44:44-0.56:556:54Waxing Crescent16Sun
17Mon12:042.85:49-0.25:35-0.36:536:55Waxing Crescent17Mon
18Tue12:303.31:042.77:150.06:37-0.16:516:56First Quarter18Tue
19Wed1:333.12:082.68:390.18:010.16:506:57First Quarter19Wed
20Thu2:412.93:192.69:510.19:440.16:486:58First Quarter20Thu
21Fri3:572.84:312.710:530.010:580.06:466:59Waxing Gibbous21Fri
22Sat5:072.95:332.911:46-0.111:56-0.16:457:00Waxing Gibbous22Sat
23Sun6:032.96:263.112:32-0.26:437:01Waxing Gibbous23Sun
24Mon6:523.07:133.212:46-0.21:13-0.36:417:03Waxing Gibbous24Mon
25Tue7:353.07:563.31:31-0.31:49-0.36:407:04Full Moon25Tue
26Wed8:153.08:363.42:11-0.32:20-0.36:387:05Full Moon26Wed
27Thu8:533.09:133.32:46-0.32:45-0.36:367:06Full Moon27Thu
28Fri9:282.99:483.23:17-0.23:08-0.26:357:07Full Moon28Fri
29Sat10:032.710:223.03:45-0.13:34-0.16:337:08Waning Gibbous29Sat
30Sun10:382.610:572.84:140.04:050.16:317:09Waning Gibbous30Sun
31Mon11:162.411:342.64:480.24:410.26:307:10Waning Gibbous31Mon
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