Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 2:53 pm (-0.4 ft)
Next high tide : in 1h 33m at 8:59 am (3.4 ft)
Sunset today : 8:17 pm
Sunrise tomorrow : 5:26 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Feb 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:582.411:222.44:150.14:320.06:565:03Waxing Crescent1Thu
2Fri11:402.25:010.35:110.26:555:04First Quarter2Fri
3Sat12:052.312:252.06:030.55:570.36:545:05First Quarter3Sat
4Sun12:502.21:161.97:430.56:500.36:535:07First Quarter4Sun
5Mon1:422.22:191.89:050.57:500.46:525:08First Quarter5Mon
6Tue2:502.23:321.910:060.49:000.36:515:09Waxing Gibbous6Tue
7Wed3:592.44:302.010:560.210:060.16:495:10Waxing Gibbous7Wed
8Thu4:512.65:162.211:400.110:59-0.16:485:12Waxing Gibbous8Thu
9Fri5:352.85:592.512:21-0.16:475:13Waxing Gibbous9Fri
10Sat6:163.16:402.712:58-0.36:465:14Full Moon10Sat
11Sun6:583.37:233.012:31-0.51:33-0.56:455:15Full Moon11Sun
12Mon7:413.48:063.11:15-0.62:05-0.66:435:17Full Moon12Mon
13Tue8:243.48:513.21:59-0.72:36-0.66:425:18Waning Gibbous13Tue
14Wed9:093.39:393.32:43-0.63:10-0.66:415:19Waning Gibbous14Wed
15Thu9:573.110:293.33:30-0.53:49-0.56:395:20Waning Gibbous15Thu
16Fri10:482.911:233.24:23-0.34:33-0.46:385:21Waning Gibbous16Fri
17Sat11:442.75:30-0.25:26-0.36:375:23Third Quarter17Sat
18Sun12:223.112:442.57:010.06:30-0.16:355:24Third Quarter18Sun
19Mon1:263.01:512.38:260.17:560.06:345:25Third Quarter19Mon
20Tue2:382.93:062.39:380.09:290.06:325:26Waning Crescent20Tue
21Wed3:513.04:162.410:38-0.110:36-0.16:315:27Waning Crescent21Wed
22Thu4:533.15:142.611:30-0.211:31-0.26:305:29Waning Crescent22Thu
23Fri5:463.16:042.812:16-0.36:285:30Waning Crescent23Fri
24Sat6:333.26:503.012:20-0.312:57-0.46:275:31New Moon24Sat
25Sun7:163.27:333.01:04-0.41:33-0.46:255:32New Moon25Sun
26Mon7:553.28:123.01:42-0.42:04-0.46:245:33New Moon26Mon
27Tue8:323.08:493.02:15-0.32:29-0.46:225:35New Moon27Tue
28Wed9:082.99:252.92:44-0.22:52-0.36:205:36Waxing Crescent28Wed
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 11:56 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 2% 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 (2% 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