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 6h 09m 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 - Jun 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:572.78:083.42:170.21:270.15:158:12New Moon1Wed
2Thu8:372.78:483.42:550.12:080.15:158:13New Moon2Thu
3Fri9:192.89:303.43:300.12:500.15:148:13New Moon3Fri
4Sat10:032.810:143.44:030.13:340.15:148:14Waxing Crescent4Sat
5Sun10:502.911:013.34:370.14:200.25:148:15Waxing Crescent5Sun
6Mon11:402.911:523.25:160.15:110.35:138:15Waxing Crescent6Mon
7Tue12:343.06:030.16:130.45:138:16First Quarter7Tue
8Wed12:463.11:303.16:560.17:280.45:138:17First Quarter8Wed
9Thu1:422.92:293.37:520.18:540.45:138:17First Quarter9Thu
10Fri2:432.83:313.48:500.110:130.35:138:18First Quarter10Fri
11Sat3:502.84:353.69:520.011:190.15:138:18Waxing Gibbous11Sat
12Sun4:582.85:363.710:540.05:128:19Waxing Gibbous12Sun
13Mon5:592.96:323.912:170.011:51 AM-0.15:128:19Waxing Gibbous13Mon
14Tue6:553.07:253.91:11-0.112:46-0.15:128:20Full Moon14Tue
15Wed7:483.18:153.92:03-0.21:39-0.25:128:20Full Moon15Wed
16Thu8:383.29:043.82:51-0.22:30-0.15:128:21Full Moon16Thu
17Fri9:273.29:513.63:35-0.23:170.05:128:21Waning Gibbous17Fri
18Sat10:153.110:363.44:16-0.14:000.15:138:21Waning Gibbous18Sat
19Sun11:023.011:213.24:550.04:420.35:138:22Waning Gibbous19Sun
20Mon11:502.95:330.25:270.55:138:22Waning Gibbous20Mon
21Tue12:052.912:382.86:100.36:250.75:138:22Third Quarter21Tue
22Wed12:502.71:232.76:460.47:350.85:138:22Third Quarter22Wed
23Thu1:332.52:082.77:230.58:430.85:148:22Third Quarter23Thu
24Fri2:192.32:552.78:040.69:480.85:148:23Third Quarter24Fri
25Sat3:112.23:482.78:500.610:470.85:148:23Waning Crescent25Sat
26Sun4:132.24:452.89:420.611:390.65:158:23Waning Crescent26Sun
27Mon5:122.35:353.010:360.55:158:23Waning Crescent27Mon
28Tue6:012.46:203.212:270.511:28 AM0.45:158:23Waning Crescent28Tue
29Wed6:462.57:033.31:120.412:170.25:168:23New Moon29Wed
30Thu7:292.77:463.51:550.21:040.15:168:23New Moon30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

Show All
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