Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 03m at 4:18 am (-0.3 ft)
Next high tide : 10:07 am (3.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (9% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Apr 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:052.65:360.15:330.16:287:11Third Quarter1Thu
2Fri12:333.01:032.56:380.26:340.26:267:12Third Quarter2Fri
3Sat1:332.92:062.58:000.27:490.26:247:14Third Quarter3Sat
4Sun2:402.93:152.79:290.19:300.26:237:15Third Quarter4Sun
5Mon3:522.94:272.910:360.010:580.06:217:16Waning Crescent5Mon
6Tue5:013.15:303.211:30-0.26:197:17Waning Crescent6Tue
7Wed6:003.26:253.512:00-0.312:17-0.46:187:18Waning Crescent7Wed
8Thu6:533.47:163.812:55-0.51:02-0.56:167:19New Moon8Thu
9Fri7:423.48:043.91:46-0.61:44-0.66:147:20New Moon9Fri
10Sat8:303.48:503.92:35-0.62:24-0.66:137:21New Moon10Sat
11Sun9:163.39:363.73:20-0.63:01-0.56:117:22New Moon11Sun
12Mon10:023.110:203.54:03-0.43:37-0.36:107:23Waxing Crescent12Mon
13Tue10:482.911:063.24:45-0.24:12-0.16:087:24Waxing Crescent13Tue
14Wed11:372.711:542.95:300.14:500.16:077:25Waxing Crescent14Wed
15Thu12:282.56:280.35:350.46:057:26First Quarter15Thu
16Fri12:442.61:232.37:350.56:310.66:037:27First Quarter16Fri
17Sat1:382.42:212.38:380.67:470.76:027:28First Quarter17Sat
18Sun2:382.33:242.39:350.69:260.76:007:30First Quarter18Sun
19Mon3:472.34:272.410:250.510:330.65:597:31First Quarter19Mon
20Tue4:502.35:182.511:090.511:260.45:577:32Waxing Gibbous20Tue
21Wed5:372.45:592.811:460.35:567:33Waxing Gibbous21Wed
22Thu6:152.56:353.012:110.312:180.25:557:34Waxing Gibbous22Thu
23Fri6:502.77:103.212:530.112:480.15:537:35Waxing Gibbous23Fri
24Sat7:262.87:463.41:330.01:170.05:527:36Full Moon24Sat
25Sun8:032.98:243.52:11-0.11:49-0.15:507:37Full Moon25Sun
26Mon8:432.99:043.62:48-0.22:25-0.25:497:38Full Moon26Mon
27Tue9:262.99:473.53:23-0.23:03-0.25:487:39Waning Gibbous27Tue
28Wed10:112.910:333.54:00-0.23:45-0.15:467:40Waning Gibbous28Wed
29Thu11:002.911:243.44:42-0.14:300.05:457:41Waning Gibbous29Thu
30Fri11:542.85:320.05:230.15:447:42Waning Gibbous30Fri
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 7:12 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 9% 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 Waxing Crescent (9% 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