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 5h 18m at 11:19 am (0.5 ft)
Next high tide : 6:23 pm (3.1 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 - Jan 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:152.610:442.53:370.24:120.07:114:28Waxing Crescent1Thu
2Fri10:592.511:312.54:230.34:510.17:114:29First Quarter2Fri
3Sat11:492.35:180.45:370.17:114:30First Quarter3Sat
4Sun12:222.612:432.26:270.46:300.07:114:31First Quarter4Sun
5Mon1:172.71:452.27:560.47:290.07:114:31First Quarter5Mon
6Tue2:202.92:552.29:270.28:35-0.17:114:32Waxing Gibbous6Tue
7Wed3:293.14:052.410:320.09:44-0.37:114:33Waxing Gibbous7Wed
8Thu4:343.35:062.611:28-0.310:49-0.57:114:34Waxing Gibbous8Thu
9Fri5:333.66:012.912:20-0.57:114:35Full Moon9Fri
10Sat6:273.86:543.11:10-0.77:114:37Full Moon10Sat
11Sun7:193.87:453.312:46-0.81:57-0.87:104:38Full Moon11Sun
12Mon8:093.88:353.31:40-0.82:40-0.87:104:39Full Moon12Mon
13Tue8:583.69:253.32:32-0.83:22-0.77:104:40Waning Gibbous13Tue
14Wed9:463.310:163.23:22-0.64:02-0.57:094:41Waning Gibbous14Wed
15Thu10:342.911:093.14:16-0.34:41-0.37:094:42Waning Gibbous15Thu
16Fri11:242.65:180.05:21-0.17:084:43Third Quarter16Fri
17Sat12:032.912:162.26:310.26:030.17:084:44Third Quarter17Sat
18Sun12:582.71:112.07:430.46:510.37:074:45Third Quarter18Sun
19Mon1:592.52:151.88:510.57:540.47:074:47Third Quarter19Mon
20Tue3:082.43:281.89:530.59:150.47:064:48Waning Crescent20Tue
21Wed4:122.44:311.910:450.410:170.37:054:49Waning Crescent21Wed
22Thu5:052.55:192.011:300.311:060.27:054:50Waning Crescent22Thu
23Fri5:492.66:012.212:110.17:044:51Waning Crescent23Fri
24Sat6:282.86:382.312:490.07:034:53New Moon24Sat
25Sun7:022.97:132.512:280.01:24-0.17:034:54New Moon25Sun
26Mon7:342.97:472.61:05-0.11:54-0.27:024:55New Moon26Mon
27Tue8:042.98:202.71:39-0.22:20-0.37:014:56New Moon27Tue
28Wed8:362.98:552.72:12-0.22:42-0.37:004:58Waxing Crescent28Wed
29Thu9:112.89:332.82:45-0.13:06-0.36:594:59Waxing Crescent29Thu
30Fri9:492.610:132.83:210.03:37-0.36:585:00Waxing Crescent30Fri
31Sat10:322.510:592.84:020.14:13-0.26:575:01Waxing Crescent31Sat
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 2:51 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 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