Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 38m at 4:34 pm (0.4 ft)
Next high tide : 11:00 pm (3.0 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Aug 2093

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:202.73:023.28:080.39:410.55:438:02First Quarter1Sat
2Sun3:252.74:083.49:110.210:570.35:448:01Waxing Gibbous2Sun
3Mon4:352.85:143.610:210.111:580.15:458:00Waxing Gibbous3Mon
4Tue5:413.06:143.911:29-0.15:467:58Waxing Gibbous4Tue
5Wed6:393.27:104.112:53-0.112:32-0.25:477:57Full Moon5Wed
6Thu7:343.58:034.21:45-0.31:32-0.45:477:56Full Moon6Thu
7Fri8:263.68:544.22:34-0.42:29-0.45:487:55Full Moon7Fri
8Sat9:183.79:444.03:20-0.53:23-0.45:497:53Waning Gibbous8Sat
9Sun10:083.710:333.84:03-0.44:15-0.25:507:52Waning Gibbous9Sun
10Mon10:593.611:233.54:44-0.35:100.05:517:51Waning Gibbous10Mon
11Tue11:513.55:26-0.16:140.25:527:50Waning Gibbous11Tue
12Wed12:153.212:453.36:080.27:240.55:537:48Third Quarter12Wed
13Thu1:072.81:393.16:530.48:310.65:547:47Third Quarter13Thu
14Fri2:012.62:373.07:410.59:340.75:557:45Third Quarter14Fri
15Sat3:012.43:412.88:340.710:340.85:567:44Third Quarter15Sat
16Sun4:072.34:472.89:390.711:260.75:577:43Waning Crescent16Sun
17Mon5:092.45:422.910:430.75:587:41Waning Crescent17Mon
18Tue6:002.56:273.012:120.611:35 AM0.65:597:40Waning Crescent18Tue
19Wed6:432.67:063.112:530.512:200.56:017:38Waning Crescent19Wed
20Thu7:232.87:403.21:320.41:020.46:027:37New Moon20Thu
21Fri7:592.98:123.22:080.31:430.36:037:35New Moon21Fri
22Sat8:343.08:443.32:400.22:210.26:047:34New Moon22Sat
23Sun9:093.19:183.23:070.22:570.26:057:32New Moon23Sun
24Mon9:453.29:543.23:290.23:330.26:067:31Waxing Crescent24Mon
25Tue10:233.210:333.13:530.24:100.36:077:29Waxing Crescent25Tue
26Wed11:043.211:173.04:230.24:520.46:087:27Waxing Crescent26Wed
27Thu11:503.25:000.25:410.56:087:26Waxing Crescent27Thu
28Fri12:072.812:423.25:440.36:410.66:097:24First Quarter28Fri
29Sat1:012.71:383.26:380.38:000.66:107:23First Quarter29Sat
30Sun2:012.72:403.37:410.49:340.56:117:21First Quarter30Sun
31Mon3:082.73:503.48:530.310:470.36:127:19Waxing 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 7:47 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 84% 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 Gibbous (84% 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