Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 05m at 4:18 am (-0.3 ft)
Next high tide : 10:07 am (3.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (9% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:203.212:532.86:360.16:290.25:427:43Third Quarter1Sat
2Sun1:203.11:552.97:520.17:570.35:417:44Third Quarter2Sun
3Mon2:233.03:003.09:020.19:390.35:407:46Third Quarter3Mon
4Tue3:303.04:083.210:040.010:520.15:397:47Waning Crescent4Tue
5Wed4:383.05:113.410:58-0.111:51-0.15:377:48Waning Crescent5Wed
6Thu5:393.06:073.611:47-0.25:367:49Waning Crescent6Thu
7Fri6:333.16:573.812:45-0.212:32-0.35:357:50Waning Crescent7Fri
8Sat7:223.27:453.81:35-0.31:15-0.35:347:51New Moon8Sat
9Sun8:103.28:313.82:22-0.31:55-0.35:337:52New Moon9Sun
10Mon8:563.19:153.73:06-0.32:34-0.25:327:53New Moon10Mon
11Tue9:423.19:583.43:46-0.23:10-0.15:317:54Waxing Crescent11Tue
12Wed10:262.910:403.24:250.03:470.15:307:55Waxing Crescent12Wed
13Thu11:122.811:223.05:040.24:250.35:297:56Waxing Crescent13Thu
14Fri12:002.65:470.35:080.55:287:57Waxing Crescent14Fri
15Sat12:072.712:502.56:400.55:590.65:277:58First Quarter15Sat
16Sun12:522.61:402.47:370.67:030.85:267:59First Quarter16Sun
17Mon1:392.42:302.48:280.68:240.85:258:00First Quarter17Mon
18Tue2:292.33:252.59:150.69:440.75:248:01First Quarter18Tue
19Wed3:262.34:202.69:590.510:460.65:238:02Waxing Gibbous19Wed
20Thu4:282.35:092.910:400.511:370.45:228:03Waxing Gibbous20Thu
21Fri5:212.45:523.111:180.35:218:04Waxing Gibbous21Fri
22Sat6:072.66:333.312:230.311:56 AM0.25:218:04Waxing Gibbous22Sat
23Sun6:512.87:153.51:060.112:360.05:208:05Full Moon23Sun
24Mon7:352.97:593.71:49-0.11:17-0.15:198:06Full Moon24Mon
25Tue8:213.08:443.82:31-0.22:01-0.25:198:07Full Moon25Tue
26Wed9:083.19:313.83:13-0.22:47-0.25:188:08Full Moon26Wed
27Thu9:573.210:203.73:55-0.23:34-0.25:178:09Waning Gibbous27Thu
28Fri10:483.211:123.64:39-0.24:25-0.15:178:10Waning Gibbous28Fri
29Sat11:433.25:29-0.15:220.15:168:10Waning Gibbous29Sat
30Sun12:073.412:413.26:280.06:370.25:168:11Third Quarter30Sun
31Mon1:053.21:413.27:310.08:130.35:158:12Third 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 7:12 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 9% 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 Waxing Crescent (9% 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