Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 10:27 pm (0.7 ft)
Next high tide : in 5h 53m at 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 - Nov 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:172.912:513.26:060.47:390.47:175:42First Quarter1Tue
2Wed1:202.71:542.97:480.58:400.57:185:41First Quarter2Wed
3Thu2:242.72:572.79:040.69:340.57:195:40First Quarter3Thu
4Fri3:292.74:002.610:080.610:210.57:205:38First Quarter4Fri
5Sat4:302.84:552.611:010.611:010.47:225:37Waxing Gibbous5Sat
6Sun4:212.94:422.610:470.510:350.46:234:36Waxing Gibbous6Sun
7Mon5:043.05:232.611:270.411:050.36:244:35Waxing Gibbous7Mon
8Tue5:413.15:592.712:040.36:254:34Waxing Gibbous8Tue
9Wed6:153.26:342.712:400.26:264:33Full Moon9Wed
10Thu6:463.37:082.812:040.11:150.16:284:32Full Moon10Thu
11Fri7:183.37:432.712:370.11:490.16:294:31Full Moon11Fri
12Sat7:523.28:202.71:120.12:200.26:304:30Full Moon12Sat
13Sun8:283.28:592.61:490.12:490.36:314:29Waning Gibbous13Sun
14Mon9:073.19:412.62:270.23:210.46:324:28Waning Gibbous14Mon
15Tue9:513.010:302.53:080.34:000.46:344:27Waning Gibbous15Tue
16Wed10:402.911:232.53:540.44:490.56:354:26Waning Gibbous16Wed
17Thu11:352.84:490.55:490.46:364:26Third Quarter17Thu
18Fri12:212.612:332.85:580.56:550.36:374:25Third Quarter18Fri
19Sat1:202.81:352.87:210.57:580.26:384:24Third Quarter19Sat
20Sun2:233.02:412.88:500.38:580.06:394:23Waning Crescent20Sun
21Mon3:263.33:472.910:000.19:52-0.26:414:23Waning Crescent21Mon
22Tue4:243.64:473.010:58-0.210:43-0.36:424:22Waning Crescent22Tue
23Wed5:183.95:423.211:51-0.411:33-0.56:434:21New Moon23Wed
24Thu6:104.16:343.312:43-0.56:444:21New Moon24Thu
25Fri7:014.27:253.312:22-0.51:34-0.66:454:20New Moon25Fri
26Sat7:524.18:153.31:12-0.52:23-0.56:464:20New Moon26Sat
27Sun8:423.99:063.12:01-0.43:11-0.46:474:19Waxing Crescent27Sun
28Mon9:333.69:583.02:50-0.33:59-0.26:484:19Waxing Crescent28Mon
29Tue10:263.310:532.83:400.04:530.06:504:19Waxing Crescent29Tue
30Wed11:203.011:512.74:400.35:500.26:514:18First Quarter30Wed
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 7:06 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