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 : 2:57 pm (-0.4 ft)
Next high tide : in 2h 49m at 9:14 am (3.3 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 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:552.86:04-0.15:260.05:437:43Waning Gibbous1Sat
2Sun12:253.412:562.77:160.16:470.35:417:44Third Quarter2Sun
3Mon1:293.12:002.68:240.28:290.45:407:45Third Quarter3Mon
4Tue2:362.93:082.69:260.39:470.55:397:46Third Quarter4Tue
5Wed3:442.74:152.710:210.310:510.45:387:47Third Quarter5Wed
6Thu4:472.65:142.811:080.311:440.45:377:48Waning Crescent6Thu
7Fri5:392.66:033.011:460.35:357:49Waning Crescent7Fri
8Sat6:242.76:443.112:290.312:190.25:347:50Waning Crescent8Sat
9Sun7:032.77:213.21:090.212:470.15:337:51Waning Crescent9Sun
10Mon7:402.77:553.31:460.21:130.15:327:52New Moon10Mon
11Tue8:162.78:273.32:210.11:420.15:317:53New Moon11Tue
12Wed8:512.78:583.22:540.12:140.15:307:54New Moon12Wed
13Thu9:262.69:303.13:250.12:490.25:297:55New Moon13Thu
14Fri10:022.510:053.03:560.23:250.35:287:56Waxing Crescent14Fri
15Sat10:412.410:442.94:270.34:030.45:277:57Waxing Crescent15Sat
16Sun11:252.411:292.85:030.54:440.55:267:58Waxing Crescent16Sun
17Mon12:132.35:480.65:330.65:257:59Waxing Crescent17Mon
18Tue12:192.81:062.36:480.66:320.65:248:00First Quarter18Tue
19Wed1:142.72:032.57:550.67:420.65:238:01First Quarter19Wed
20Thu2:122.73:032.78:550.49:010.55:228:02First Quarter20Thu
21Fri3:162.84:052.99:500.310:220.35:228:03Waxing Gibbous21Fri
22Sat4:222.85:053.310:400.111:280.15:218:04Waxing Gibbous22Sat
23Sun5:243.05:583.711:27-0.15:208:05Waxing Gibbous23Sun
24Mon6:203.16:494.012:25-0.212:13-0.35:208:06Waxing Gibbous24Mon
25Tue7:143.27:404.21:20-0.41:00-0.45:198:07Full Moon25Tue
26Wed8:063.38:314.32:14-0.51:49-0.55:188:08Full Moon26Wed
27Thu8:583.39:234.23:06-0.62:40-0.45:188:08Full Moon27Thu
28Fri9:503.210:164.03:58-0.53:30-0.35:178:09Waning Gibbous28Fri
29Sat10:443.111:113.74:51-0.34:23-0.15:168:10Waning Gibbous29Sat
30Sun11:403.05:49-0.15:230.15:168:11Waning Gibbous30Sun
31Mon12:093.412:392.96:510.16:460.45:158:12Third Quarter31Mon
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 12:05 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 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