Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 26, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 11:19 am (0.5 ft)
Next high tide : in 3h 15m at 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 2047

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:212.92:083.07:320.38:090.55:158:12First Quarter1Sat
2Sun2:192.83:073.28:270.29:330.45:158:13First Quarter2Sun
3Mon3:232.84:103.49:250.110:480.25:148:14Waxing Gibbous3Mon
4Tue4:312.85:113.710:250.011:510.05:148:14Waxing Gibbous4Tue
5Wed5:352.96:093.911:23-0.15:148:15Waxing Gibbous5Wed
6Thu6:343.07:034.112:48-0.212:19-0.25:138:16Full Moon6Thu
7Fri7:283.17:564.11:42-0.31:14-0.35:138:16Full Moon7Fri
8Sat8:223.28:494.12:35-0.42:10-0.35:138:17Full Moon8Sat
9Sun9:133.39:403.93:25-0.43:03-0.25:138:17Full Moon9Sun
10Mon10:043.210:303.74:12-0.33:54-0.15:138:18Waning Gibbous10Mon
11Tue10:563.111:203.44:58-0.14:460.15:138:19Waning Gibbous11Tue
12Wed11:493.05:460.05:440.35:128:19Waning Gibbous12Wed
13Thu12:113.112:422.96:340.26:540.55:128:20Third Quarter13Thu
14Fri1:012.81:342.97:180.38:020.75:128:20Third Quarter14Fri
15Sat1:502.62:262.87:570.49:040.85:128:20Third Quarter15Sat
16Sun2:402.43:192.88:320.510:030.85:138:21Third Quarter16Sun
17Mon3:352.34:152.89:110.610:570.75:138:21Waning Crescent17Mon
18Tue4:352.25:072.89:560.611:460.65:138:21Waning Crescent18Tue
19Wed5:302.25:532.910:460.55:138:22Waning Crescent19Wed
20Thu6:162.36:343.112:320.511:34 AM0.45:138:22Waning Crescent20Thu
21Fri6:572.47:123.21:160.412:190.45:138:22New Moon21Fri
22Sat7:372.67:513.31:590.31:040.35:138:22New Moon22Sat
23Sun8:172.78:293.32:400.21:480.25:148:23New Moon23Sun
24Mon8:572.89:083.43:160.22:310.25:148:23New Moon24Mon
25Tue9:392.89:493.33:480.23:140.25:148:23Waxing Crescent25Tue
26Wed10:222.910:313.34:170.13:570.25:158:23Waxing Crescent26Wed
27Thu11:093.011:173.24:470.14:440.35:158:23Waxing Crescent27Thu
28Fri11:583.15:220.15:370.45:168:23Waxing Crescent28Fri
29Sat12:073.112:503.26:060.16:420.45:168:23First Quarter29Sat
30Sun1:002.91:443.36:550.17:590.55:168:23First Quarter30Sun
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 8:36 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