Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 16, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 4:18 am (-0.3 ft)
Next high tide : in 1h 35m at 9:37 pm (4.1 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (4% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:122.83:012.69:110.48:500.45:427:43First Quarter1Fri
2Sat3:212.94:092.910:150.210:200.25:417:44Waxing Gibbous2Sat
3Sun4:313.05:123.211:070.011:30-0.15:407:45Waxing Gibbous3Sun
4Mon5:343.26:073.611:53-0.25:397:46Waxing Gibbous4Mon
5Tue6:293.36:583.912:28-0.312:36-0.45:377:48Waxing Gibbous5Tue
6Wed7:213.47:474.11:23-0.51:19-0.55:367:49Full Moon6Wed
7Thu8:113.48:364.22:15-0.62:03-0.55:357:50Full Moon7Thu
8Fri9:013.39:254.13:06-0.62:47-0.55:347:51Full Moon8Fri
9Sat9:513.210:143.93:55-0.53:29-0.35:337:52Waning Gibbous9Sat
10Sun10:413.011:063.64:44-0.34:13-0.15:327:53Waning Gibbous10Sun
11Mon11:342.85:390.05:000.25:317:54Waning Gibbous11Mon
12Tue12:013.312:312.66:410.25:590.45:307:55Third Quarter12Tue
13Wed12:593.01:302.57:440.47:350.65:297:56Third Quarter13Wed
14Thu1:582.72:302.58:420.58:570.75:287:57Third Quarter14Thu
15Fri2:592.53:342.59:350.510:020.75:277:58Third Quarter15Fri
16Sat4:022.54:342.610:210.510:570.65:267:59Waning Crescent16Sat
17Sun4:582.45:242.711:000.511:440.55:258:00Waning Crescent17Sun
18Mon5:442.56:062.911:340.45:248:01Waning Crescent18Mon
19Tue6:242.56:413.012:260.412:050.35:238:02Waning Crescent19Tue
20Wed7:012.67:143.21:060.312:350.25:228:02Waning Crescent20Wed
21Thu7:362.77:463.31:460.21:070.15:228:03New Moon21Thu
22Fri8:112.78:203.42:240.11:410.15:218:04New Moon22Fri
23Sat8:492.78:573.43:000.12:180.15:208:05New Moon23Sat
24Sun9:282.79:363.33:330.12:560.15:198:06New Moon24Sun
25Mon10:102.710:193.34:050.23:360.25:198:07Waxing Crescent25Mon
26Tue10:552.611:063.24:400.24:200.25:188:08Waxing Crescent26Tue
27Wed11:462.611:583.15:240.35:090.35:178:09Waxing Crescent27Wed
28Thu12:422.76:200.36:080.45:178:09First Quarter28Thu
29Fri12:543.01:402.87:260.37:200.55:168:10First Quarter29Fri
30Sat1:533.02:413.08:300.28:450.45:168:11First Quarter30Sat
31Sun2:562.93:453.29:290.110:110.35:158:12First Quarter31Sun
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 12:57 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 4% 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 New Moon (4% 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