Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 57m at 10:27 pm (0.7 ft)
Next high tide (tomorrow) : 4:00 am (2.3 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 2043

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:553.57:092.81:170.11:100.16:174:42New Moon1Sun
2Mon7:293.47:442.812:420.11:410.16:184:40New Moon2Mon
3Tue8:013.38:192.71:110.22:110.26:194:39New Moon3Tue
4Wed8:343.28:542.51:440.22:420.36:214:38Waxing Crescent4Wed
5Thu9:093.09:322.42:190.43:160.46:224:37Waxing Crescent5Thu
6Fri9:482.810:152.32:560.53:570.66:234:36Waxing Crescent6Fri
7Sat10:332.711:052.23:370.64:490.76:244:35Waxing Crescent7Sat
8Sun11:262.64:250.86:100.86:254:34First Quarter8Sun
9Mon12:012.212:232.65:270.87:270.76:274:33First Quarter9Mon
10Tue1:002.21:222.66:460.88:190.66:284:32First Quarter10Tue
11Wed2:012.42:252.68:210.79:020.46:294:31First Quarter11Wed
12Thu3:022.73:272.79:360.59:420.26:304:30Waxing Gibbous12Thu
13Fri3:583.14:232.910:310.210:22-0.16:314:29Waxing Gibbous13Fri
14Sat4:483.55:143.111:21-0.111:03-0.36:334:28Waxing Gibbous14Sat
15Sun5:363.96:043.212:11-0.36:344:27Full Moon15Sun
16Mon6:244.16:543.21:01-0.56:354:26Full Moon16Mon
17Tue7:144.27:443.212:32-0.51:51-0.56:364:25Full Moon17Tue
18Wed8:054.18:353.21:20-0.52:42-0.46:374:25Waning Gibbous18Wed
19Thu8:584.09:293.02:10-0.43:36-0.36:394:24Waning Gibbous19Thu
20Fri9:543.710:262.93:02-0.34:380.06:404:23Waning Gibbous20Fri
21Sat10:543.411:282.83:590.05:490.16:414:23Waning Gibbous21Sat
22Sun11:573.15:170.26:550.26:424:22Third Quarter22Sun
23Mon12:322.81:002.86:540.47:530.36:434:21Third Quarter23Mon
24Tue1:362.82:042.68:120.48:450.36:444:21Third Quarter24Tue
25Wed2:402.83:062.59:170.49:310.36:454:20Waning Crescent25Wed
26Thu3:402.94:022.410:120.410:100.26:464:20Waning Crescent26Thu
27Fri4:313.14:492.410:590.310:440.26:484:19Waning Crescent27Fri
28Sat5:153.15:312.411:390.211:130.26:494:19Waning Crescent28Sat
29Sun5:543.26:092.512:160.26:504:18New Moon29Sun
30Mon6:303.26:462.512:510.16:514:18New Moon30Mon
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 1:13 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