Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 32m at 3:46 pm (-0.3 ft)
Next high tide : 10:11 pm (3.8 ft)
Sunset today : 8:17 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:222.611:562.54:360.35:200.17:114:28First Quarter1Fri
2Sat12:172.55:390.36:140.07:114:28First Quarter2Sat
3Sun12:522.61:152.56:570.37:120.07:114:29First Quarter3Sun
4Mon1:522.82:212.58:360.28:14-0.17:114:30First Quarter4Mon
5Tue2:583.03:302.59:530.09:19-0.37:114:31Waxing Gibbous5Tue
6Wed4:033.34:342.710:53-0.210:20-0.47:114:32Waxing Gibbous6Wed
7Thu5:023.55:312.911:48-0.511:17-0.67:114:33Waxing Gibbous7Thu
8Fri5:563.86:253.112:40-0.77:114:34Full Moon8Fri
9Sat6:493.97:173.212:12-0.71:30-0.87:114:35Full Moon9Sat
10Sun7:403.98:073.21:05-0.82:18-0.87:114:36Full Moon10Sun
11Mon8:303.78:573.21:56-0.73:03-0.77:104:37Waning Gibbous11Mon
12Tue9:193.59:473.12:45-0.63:47-0.57:104:38Waning Gibbous12Tue
13Wed10:083.210:392.93:34-0.44:33-0.37:104:39Waning Gibbous13Wed
14Thu10:582.911:332.84:26-0.15:20-0.17:094:40Waning Gibbous14Thu
15Fri11:492.55:310.16:080.17:094:42Third Quarter15Fri
16Sat12:272.612:402.26:460.36:550.27:094:43Third Quarter16Sat
17Sun1:232.51:352.07:570.47:420.37:084:44Third Quarter17Sun
18Mon2:232.42:381.99:020.58:350.47:084:45Third Quarter18Mon
19Tue3:262.43:451.99:590.49:300.37:074:46Waning Crescent19Tue
20Wed4:232.54:402.010:480.310:190.37:064:47Waning Crescent20Wed
21Thu5:092.65:242.111:320.211:030.17:064:49Waning Crescent21Thu
22Fri5:502.76:032.212:140.07:054:50Waning Crescent22Fri
23Sat6:262.96:392.412:53-0.17:044:51New Moon23Sat
24Sun7:013.07:152.512:23-0.11:30-0.27:044:52New Moon24Sun
25Mon7:363.07:512.61:01-0.22:02-0.27:034:53New Moon25Mon
26Tue8:113.08:282.61:37-0.22:30-0.37:024:55New Moon26Tue
27Wed8:483.09:082.72:14-0.22:56-0.37:014:56Waxing Crescent27Wed
28Thu9:272.99:512.72:51-0.23:26-0.37:014:57Waxing Crescent28Thu
29Fri10:112.810:382.83:33-0.14:02-0.37:004:58Waxing Crescent29Fri
30Sat10:592.711:292.84:210.04:45-0.26:595:00Waxing Crescent30Sat
31Sun11:532.55:190.15:35-0.26:585:01First Quarter31Sun
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 6:58 pm — 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 7% 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 (7% 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