Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 57m at 10:48 pm (0.8 ft)
Next high tide (tomorrow) : 4:22 am (2.1 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:33 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Nov 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:333.04:542.710:580.410:500.36:184:41Waxing Gibbous1Sun
2Mon5:153.15:332.711:370.411:180.26:194:40Waxing Gibbous2Mon
3Tue5:513.26:092.712:130.36:204:39Full Moon3Tue
4Wed6:243.36:432.712:480.26:214:37Full Moon4Wed
5Thu6:553.37:172.712:120.11:210.26:224:36Full Moon5Thu
6Fri7:263.37:512.712:430.11:530.26:244:35Full Moon6Fri
7Sat7:593.28:272.61:180.22:240.36:254:34Waning Gibbous7Sat
8Sun8:343.19:052.51:540.22:550.46:264:33Waning Gibbous8Sun
9Mon9:133.09:482.42:310.33:290.56:274:32Waning Gibbous9Mon
10Tue9:572.910:372.33:120.44:110.66:284:31Waning Gibbous10Tue
11Wed10:482.811:322.33:580.55:080.66:304:30Third Quarter11Wed
12Thu11:442.74:540.66:240.66:314:29Third Quarter12Thu
13Fri12:312.412:432.76:050.67:300.56:324:28Third Quarter13Fri
14Sat1:312.61:452.77:300.68:240.36:334:27Third Quarter14Sat
15Sun2:342.92:512.88:560.49:140.16:344:27Waning Crescent15Sun
16Mon3:353.23:542.910:030.110:01-0.16:364:26Waning Crescent16Mon
17Tue4:303.64:523.011:00-0.210:46-0.36:374:25Waning Crescent17Tue
18Wed5:223.95:453.111:53-0.411:33-0.46:384:24New Moon18Wed
19Thu6:124.16:363.212:45-0.56:394:23New Moon19Thu
20Fri7:034.27:283.212:20-0.51:36-0.56:404:23New Moon20Fri
21Sat7:544.18:193.21:09-0.52:27-0.56:414:22New Moon21Sat
22Sun8:463.99:103.01:59-0.43:17-0.36:434:22Waxing Crescent22Sun
23Mon9:393.610:042.92:49-0.24:11-0.16:444:21Waxing Crescent23Mon
24Tue10:353.311:022.73:420.05:120.16:454:20Waxing Crescent24Tue
25Wed11:343.04:500.36:140.36:464:20First Quarter25Wed
26Thu12:032.612:322.76:240.57:110.46:474:19First Quarter26Thu
27Fri1:042.61:302.57:400.68:010.46:484:19First Quarter27Fri
28Sat2:052.62:292.48:450.68:450.46:494:19First Quarter28Sat
29Sun3:052.73:272.39:410.69:240.46:504:18Waxing Gibbous29Sun
30Mon3:582.74:182.310:290.59:590.36:514:18Waxing Gibbous30Mon
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 1:35 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 71% 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 Waxing Gibbous (71% 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