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 : 9:10 am (0.4 ft)
Next high tide : in 12m at 2:59 am (2.4 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 - Nov 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:523.711:252.93:58-0.25:360.17:175:41Waning Gibbous1Sat
2Sun10:513.411:252.73:480.15:490.36:194:40Waning Gibbous2Sun
3Mon11:563.14:510.47:010.56:204:39Third Quarter3Mon
4Tue12:302.61:032.86:350.68:030.56:214:38Third Quarter4Tue
5Wed1:362.52:112.78:020.78:580.56:224:37Third Quarter5Wed
6Thu2:422.63:142.69:090.69:440.56:234:36Waning Crescent6Thu
7Fri3:422.74:082.610:030.610:220.46:254:34Waning Crescent7Fri
8Sat4:322.94:512.610:470.510:530.36:264:33Waning Crescent8Sat
9Sun5:133.05:282.611:260.411:200.36:274:32Waning Crescent9Sun
10Mon5:493.26:022.712:020.36:284:31Waning Crescent10Mon
11Tue6:213.36:352.712:380.26:294:30New Moon11Tue
12Wed6:533.37:072.712:110.11:120.16:314:29New Moon12Wed
13Thu7:243.37:412.612:410.11:460.16:324:29New Moon13Thu
14Fri7:583.38:172.61:130.12:180.26:334:28New Moon14Fri
15Sat8:343.28:562.51:480.22:500.36:344:27Waxing Crescent15Sat
16Sun9:143.19:402.42:260.33:260.46:354:26Waxing Crescent16Sun
17Mon10:002.910:292.33:060.44:100.56:364:25Waxing Crescent17Mon
18Tue10:522.811:262.33:520.55:070.56:384:24Waxing Crescent18Tue
19Wed11:492.84:500.66:200.56:394:24First Quarter19Wed
20Thu12:262.412:492.86:030.67:280.46:404:23First Quarter20Thu
21Fri1:282.61:522.87:350.58:240.26:414:22First Quarter21Fri
22Sat2:322.92:582.89:060.39:150.06:424:22Waxing Gibbous22Sat
23Sun3:353.24:012.910:120.110:03-0.26:434:21Waxing Gibbous23Sun
24Mon4:313.64:573.011:08-0.210:48-0.46:454:21Waxing Gibbous24Mon
25Tue5:233.95:503.112:01-0.46:464:20Full Moon25Tue
26Wed6:134.16:413.212:52-0.56:474:20Full Moon26Wed
27Thu7:034.17:323.212:21-0.51:43-0.56:484:19Full Moon27Thu
28Fri7:534.08:223.11:09-0.52:32-0.46:494:19Full Moon28Fri
29Sat8:443.89:133.01:57-0.43:22-0.36:504:18Waning Gibbous29Sat
30Sun9:363.510:062.82:44-0.24:150.06:514:18Waning Gibbous30Sun
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 6:04 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 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