Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, June 27, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 1:33 am (0.5 ft)
Next high tide : in 2h 13m at 7:05 pm (3.1 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Gibbous (95% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:543.44:212.810:39-0.110:15-0.36:524:18Waxing Gibbous1Fri
2Sat4:503.75:162.911:32-0.211:02-0.46:534:18Waxing Gibbous2Sat
3Sun5:413.86:073.012:23-0.46:544:17Full Moon3Sun
4Mon6:313.96:573.01:13-0.46:554:17Full Moon4Mon
5Tue7:193.87:463.012:35-0.42:00-0.46:564:17Full Moon5Tue
6Wed8:083.78:342.91:21-0.32:44-0.26:574:17Full Moon6Wed
7Thu8:553.49:222.82:06-0.23:28-0.16:584:17Waning Gibbous7Thu
8Fri9:423.210:122.62:490.04:150.16:594:17Waning Gibbous8Fri
9Sat10:312.911:052.53:320.25:060.36:594:17Waning Gibbous9Sat
10Sun11:202.611:592.44:210.46:010.47:004:17Third Quarter10Sun
11Mon12:102.45:250.66:520.47:014:17Third Quarter11Mon
12Tue12:532.312:592.26:510.77:360.57:024:17Third Quarter12Tue
13Wed1:472.41:512.18:060.78:160.57:034:17Third Quarter13Wed
14Thu2:422.42:502.09:090.68:550.47:034:18Waning Crescent14Thu
15Fri3:352.53:482.010:030.59:340.47:044:18Waning Crescent15Fri
16Sat4:202.74:362.110:500.310:130.37:054:18Waning Crescent16Sat
17Sun5:002.95:172.211:340.210:520.17:064:18Waning Crescent17Sun
18Mon5:393.05:562.312:160.07:064:19Waning Crescent18Mon
19Tue6:183.26:362.512:57-0.17:074:19New Moon19Tue
20Wed6:593.37:182.612:14-0.11:36-0.17:074:20New Moon20Wed
21Thu7:413.38:022.612:57-0.22:14-0.27:084:20New Moon21Thu
22Fri8:253.38:472.71:41-0.22:50-0.27:084:21Waxing Crescent22Fri
23Sat9:113.39:362.72:25-0.23:28-0.27:094:21Waxing Crescent23Sat
24Sun9:593.210:282.83:13-0.14:10-0.27:094:22Waxing Crescent24Sun
25Mon10:513.011:242.84:060.04:58-0.17:104:22Waxing Crescent25Mon
26Tue11:462.85:130.15:51-0.17:104:23First Quarter26Tue
27Wed12:222.912:442.66:450.26:47-0.17:104:24First Quarter27Wed
28Thu1:223.01:462.58:150.27:45-0.17:104:24First Quarter28Thu
29Fri2:273.12:542.49:290.18:47-0.17:114:25Waxing Gibbous29Fri
30Sat3:333.24:022.410:310.09:50-0.27:114:26Waxing Gibbous30Sat
31Sun4:353.35:022.511:26-0.210:49-0.27:114:27Waxing Gibbous31Sun
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 10:19 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 95% 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 (95% 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