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 1h 12m 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 - Jun 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:053.12:433.38:310.09:320.35:158:13Third Quarter1Tue
2Wed3:082.93:483.39:300.110:400.25:158:13Waning Crescent2Wed
3Thu4:142.84:523.410:260.011:390.25:148:14Waning Crescent3Thu
4Fri5:172.85:493.511:180.05:148:15Waning Crescent4Fri
5Sat6:132.96:403.612:320.112:050.05:148:15Waning Crescent5Sat
6Sun7:033.07:283.61:220.012:500.05:138:16New Moon6Sun
7Mon7:513.08:133.62:070.01:320.05:138:17New Moon7Mon
8Tue8:373.08:563.52:500.02:120.15:138:17New Moon8Tue
9Wed9:213.09:363.43:280.02:490.15:138:18New Moon9Wed
10Thu10:042.910:143.24:040.13:260.25:138:18Waxing Crescent10Thu
11Fri10:462.810:523.04:370.24:030.45:128:19Waxing Crescent11Fri
12Sat11:292.711:302.85:090.34:440.55:128:19Waxing Crescent12Sat
13Sun12:132.65:430.45:300.65:128:20Waxing Crescent13Sun
14Mon12:102.712:562.66:210.56:250.75:128:20First Quarter14Mon
15Tue12:522.61:392.67:020.57:290.85:128:21First Quarter15Tue
16Wed1:372.42:252.77:460.68:420.85:138:21First Quarter16Wed
17Thu2:262.43:162.88:320.59:570.75:138:21First Quarter17Thu
18Fri3:242.44:122.99:230.510:590.65:138:22Waxing Gibbous18Fri
19Sat4:272.45:083.110:180.411:510.45:138:22Waxing Gibbous19Sat
20Sun5:272.65:593.411:110.25:138:22Waxing Gibbous20Sun
21Mon6:202.86:483.612:390.212:030.05:138:22Waxing Gibbous21Mon
22Tue7:103.07:373.81:260.012:53-0.15:148:22Full Moon22Tue
23Wed8:003.28:264.02:13-0.21:45-0.25:148:23Full Moon23Wed
24Thu8:513.39:164.02:58-0.32:37-0.35:148:23Full Moon24Thu
25Fri9:423.410:063.93:42-0.43:29-0.35:158:23Waning Gibbous25Fri
26Sat10:343.510:573.84:27-0.44:23-0.25:158:23Waning Gibbous26Sat
27Sun11:283.511:513.55:14-0.35:250.05:158:23Waning Gibbous27Sun
28Mon12:253.56:05-0.26:450.25:168:23Third Quarter28Mon
29Tue12:473.31:233.47:02-0.18:060.35:168:23Third Quarter29Tue
30Wed1:453.02:223.47:590.09:180.45:178:23Third 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 7:12 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