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 4h 22m 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 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:032.43:532.310:240.49:530.46:287:11First Quarter1Sun
2Mon4:152.64:562.611:090.211:080.16:267:12Waxing Gibbous2Mon
3Tue5:172.85:503.011:490.06:247:13Waxing Gibbous3Tue
4Wed6:103.06:383.412:04-0.212:26-0.36:237:14Waxing Gibbous4Wed
5Thu6:593.27:253.712:55-0.41:05-0.56:217:15Full Moon5Thu
6Fri7:473.48:134.01:45-0.61:45-0.66:207:17Full Moon6Fri
7Sat8:363.49:014.12:35-0.82:28-0.76:187:18Full Moon7Sat
8Sun9:253.49:504.03:23-0.83:11-0.76:167:19Waning Gibbous8Sun
9Mon10:153.210:423.94:12-0.63:56-0.56:157:20Waning Gibbous9Mon
10Tue11:083.111:373.65:06-0.44:44-0.36:137:21Waning Gibbous10Tue
11Wed12:052.96:11-0.25:42-0.16:127:22Waning Gibbous11Wed
12Thu12:383.31:062.77:250.07:110.26:107:23Third Quarter12Thu
13Fri1:423.02:112.68:340.28:480.36:087:24Third Quarter13Fri
14Sat2:492.83:202.69:370.210:030.36:077:25Third Quarter14Sat
15Sun3:582.74:282.710:320.211:050.36:057:26Waning Crescent15Sun
16Mon5:002.65:262.911:200.211:570.26:047:27Waning Crescent16Mon
17Tue5:522.76:143.012:000.16:027:28Waning Crescent17Tue
18Wed6:372.76:573.112:420.212:340.16:017:29Waning Crescent18Wed
19Thu7:172.77:353.21:220.11:040.05:597:30New Moon19Thu
20Fri7:542.88:093.21:580.01:310.05:587:32New Moon20Fri
21Sat8:302.88:413.22:320.01:590.05:567:33New Moon21Sat
22Sun9:052.79:133.13:030.02:310.05:557:34New Moon22Sun
23Mon9:392.79:453.03:320.13:040.15:537:35Waxing Crescent23Mon
24Tue10:152.510:192.94:010.23:390.25:527:36Waxing Crescent24Tue
25Wed10:542.410:572.84:310.34:170.35:507:37Waxing Crescent25Wed
26Thu11:372.411:422.75:080.44:590.45:497:38Waxing Crescent26Thu
27Fri12:252.35:530.55:490.55:487:39First Quarter27Fri
28Sat12:322.61:182.36:500.66:490.65:467:40First Quarter28Sat
29Sun1:262.62:142.57:550.57:590.65:457:41First Quarter29Sun
30Mon2:262.63:152.79:010.49:200.45:447:42First Quarter30Mon
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