Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 4h 05m at 4:01 am (0.3 ft)
Next high tide (tomorrow) : 9:55 am (2.7 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:17 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:393.69:093.01:58-0.63:08-0.47:114:28Waning Gibbous1Tue
2Wed9:293.510:013.02:47-0.53:53-0.47:114:28Waning Gibbous2Wed
3Thu10:213.310:573.03:40-0.44:43-0.37:114:29Waning Gibbous3Thu
4Fri11:173.011:563.04:42-0.25:41-0.27:114:30Third Quarter4Fri
5Sat12:152.86:040.06:42-0.17:114:31Third Quarter5Sat
6Sun12:573.01:152.57:340.17:42-0.17:114:32Third Quarter6Sun
7Mon2:013.02:212.48:510.18:43-0.17:114:33Third Quarter7Mon
8Tue3:083.03:302.39:580.09:42-0.17:114:34Waning Crescent8Tue
9Wed4:113.14:332.310:550.010:36-0.17:114:35Waning Crescent9Wed
10Thu5:073.25:262.411:45-0.111:25-0.17:114:36Waning Crescent10Thu
11Fri5:573.26:152.512:31-0.27:104:37New Moon11Fri
12Sat6:433.26:592.612:09-0.21:13-0.27:104:38New Moon12Sat
13Sun7:253.27:422.612:50-0.21:50-0.27:104:39New Moon13Sun
14Mon8:053.18:222.61:27-0.22:24-0.27:094:41New Moon14Mon
15Tue8:433.09:012.62:01-0.12:54-0.27:094:42Waxing Crescent15Tue
16Wed9:182.89:382.52:33-0.13:22-0.17:084:43Waxing Crescent16Wed
17Thu9:532.710:162.43:080.13:500.07:084:44Waxing Crescent17Thu
18Fri10:302.510:552.33:460.24:220.17:074:45Waxing Crescent18Fri
19Sat11:092.311:362.34:290.34:590.27:074:46First Quarter19Sat
20Sun11:522.15:220.55:410.27:064:47First Quarter20Sun
21Mon12:192.312:402.06:280.56:280.37:064:49First Quarter21Mon
22Tue1:072.31:341.98:020.57:210.37:054:50First Quarter22Tue
23Wed2:042.42:391.99:260.48:200.27:044:51First Quarter23Wed
24Thu3:092.63:472.010:250.29:230.17:044:52Waxing Gibbous24Thu
25Fri4:122.84:462.211:150.010:23-0.17:034:54Waxing Gibbous25Fri
26Sat5:083.15:372.512:01-0.27:024:55Waxing Gibbous26Sat
27Sun5:593.36:262.812:46-0.47:014:56Full Moon27Sun
28Mon6:483.67:153.012:11-0.61:29-0.67:004:57Full Moon28Mon
29Tue7:373.78:043.21:03-0.82:10-0.76:594:58Full Moon29Tue
30Wed8:253.78:533.31:54-0.82:50-0.76:595:00Waning Gibbous30Wed
31Thu9:143.59:433.32:45-0.83:30-0.76:585:01Waning Gibbous31Thu
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 6:58 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 spring phase. Tonight's moon is 97% 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 Full Moon (97% 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