Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 6m at 12:07 am (0.6 ft)
Next high tide : 5:53 am (2.3 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jun 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:502.83:343.29:240.210:180.45:158:12First Quarter1Mon
2Tue3:542.64:363.310:130.211:170.45:158:13Waxing Gibbous2Tue
3Wed4:562.55:313.310:590.35:148:14Waxing Gibbous3Wed
4Thu5:512.56:213.412:090.311:41 AM0.35:148:14Waxing Gibbous4Thu
5Fri6:392.57:063.412:550.312:200.35:148:15Waxing Gibbous5Fri
6Sat7:242.67:493.31:380.312:570.35:138:16Full Moon6Sat
7Sun8:072.78:293.32:170.21:350.35:138:16Full Moon7Sun
8Mon8:482.79:083.22:550.22:140.35:138:17Full Moon8Mon
9Tue9:282.79:443.13:300.22:520.45:138:18Full Moon9Tue
10Wed10:062.610:203.04:040.33:300.45:138:18Waning Gibbous10Wed
11Thu10:452.610:572.94:380.34:080.55:128:19Waning Gibbous11Thu
12Fri11:262.511:352.85:120.44:500.65:128:19Waning Gibbous12Fri
13Sat12:082.55:470.45:380.75:128:20Waning Gibbous13Sat
14Sun12:172.712:512.66:250.56:350.85:128:20Third Quarter14Sun
15Mon1:022.61:372.77:060.57:420.85:128:20Third Quarter15Mon
16Tue1:512.52:262.87:500.48:570.75:128:21Third Quarter16Tue
17Wed2:452.43:203.08:390.410:150.65:138:21Third Quarter17Wed
18Thu3:482.54:213.29:330.311:180.45:138:21Waning Crescent18Thu
19Fri4:532.65:213.510:310.15:138:22Waning Crescent19Fri
20Sat5:532.76:173.712:140.211:28 AM0.05:138:22Waning Crescent20Sat
21Sun6:492.97:114.01:070.012:24-0.25:138:22New Moon21Sun
22Mon7:423.18:054.11:59-0.21:21-0.35:138:22New Moon22Mon
23Tue8:353.38:584.12:50-0.32:18-0.45:148:23New Moon23Tue
24Wed9:283.49:504.03:39-0.43:15-0.45:148:23Waxing Crescent24Wed
25Thu10:213.510:423.84:27-0.44:11-0.35:148:23Waxing Crescent25Thu
26Fri11:153.511:353.65:15-0.35:11-0.15:158:23Waxing Crescent26Fri
27Sat12:113.46:05-0.16:230.15:158:23Waxing Crescent27Sat
28Sun12:303.21:083.46:570.07:380.35:168:23First Quarter28Sun
29Mon1:242.92:053.37:470.18:470.55:168:23First Quarter29Mon
30Tue2:192.63:043.28:350.39:530.55:168:23First Quarter30Tue
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 3:00 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 90% 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 Gibbous (90% 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