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 1h 23m at 9:10 am (0.4 ft)
Next high tide : 3:45 pm (3.0 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 - Apr 2043

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:122.512:421.96:240.66:080.66:297:11Third Quarter1Wed
2Thu1:062.41:391.97:460.77:100.66:277:12Third Quarter2Thu
3Fri2:092.32:441.99:350.78:280.66:257:13Third Quarter3Fri
4Sat3:222.43:592.110:370.510:060.56:247:14Third Quarter4Sat
5Sun4:362.65:052.511:220.311:200.26:227:15Waning Crescent5Sun
6Mon5:342.85:572.912:000.06:207:16Waning Crescent6Mon
7Tue6:233.16:443.312:14-0.112:35-0.36:197:17Waning Crescent7Tue
8Wed7:093.27:293.71:05-0.41:11-0.56:177:18New Moon8Wed
9Thu7:563.38:153.91:54-0.61:49-0.66:167:19New Moon9Thu
10Fri8:433.39:024.12:43-0.72:29-0.76:147:20New Moon10Fri
11Sat9:313.29:504.03:31-0.73:10-0.66:127:21Waxing Crescent11Sat
12Sun10:213.110:413.84:20-0.53:54-0.56:117:22Waxing Crescent12Sun
13Mon11:132.911:363.55:16-0.34:40-0.36:097:23Waxing Crescent13Mon
14Tue12:112.76:260.05:360.06:087:25First Quarter14Tue
15Wed12:383.21:132.57:430.26:520.26:067:26First Quarter15Wed
16Thu1:452.92:202.58:540.38:380.46:057:27First Quarter16Thu
17Fri2:582.73:312.59:570.310:010.46:037:28First Quarter17Fri
18Sat4:112.64:382.610:520.311:060.36:017:29Waxing Gibbous18Sat
19Sun5:122.65:342.811:370.211:570.36:007:30Waxing Gibbous19Sun
20Mon6:012.66:213.012:150.25:587:31Waxing Gibbous20Mon
21Tue6:422.77:023.212:410.212:460.15:577:32Waxing Gibbous21Tue
22Wed7:192.77:393.31:200.11:130.05:567:33Full Moon22Wed
23Thu7:542.78:133.31:550.01:370.05:547:34Full Moon23Thu
24Fri8:282.78:453.32:280.02:020.05:537:35Full Moon24Fri
25Sat9:012.69:163.22:590.02:300.15:517:36Full Moon25Sat
26Sun9:352.59:483.13:290.13:020.25:507:37Waning Gibbous26Sun
27Mon10:102.410:222.94:000.23:360.35:487:38Waning Gibbous27Mon
28Tue10:482.311:022.84:330.34:130.45:477:40Waning Gibbous28Tue
29Wed11:322.211:492.75:130.54:540.55:467:41Waning Gibbous29Wed
30Thu12:222.26:050.65:440.65:447:42Third Quarter30Thu
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 12:27 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 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