Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 16m at 2:53 am (0.3 ft)
Next high tide : 8:40 am (2.6 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:16 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2051

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:042.710:392.63:190.04:030.07:114:28Waning Gibbous1Sun
2Mon10:432.511:232.43:590.24:340.17:114:28Waning Gibbous2Mon
3Tue11:232.34:450.45:130.37:114:29Third Quarter3Tue
4Wed12:072.312:072.15:440.55:590.37:114:30Third Quarter4Wed
5Thu12:532.312:552.07:010.66:500.47:114:31Third Quarter5Thu
6Fri1:442.31:511.98:320.57:470.47:114:32Third Quarter6Fri
7Sat2:442.42:581.99:400.48:510.37:114:33Waning Crescent7Sat
8Sun3:462.54:022.110:330.39:520.17:114:34Waning Crescent8Sun
9Mon4:382.84:542.311:190.110:43-0.17:114:35Waning Crescent9Mon
10Tue5:243.05:412.512:02-0.17:104:36Waning Crescent10Tue
11Wed6:073.36:262.712:43-0.37:104:37New Moon11Wed
12Thu6:523.47:123.012:17-0.41:22-0.57:104:38New Moon12Thu
13Fri7:363.57:583.11:03-0.61:59-0.67:104:39New Moon13Fri
14Sat8:223.68:463.21:50-0.62:36-0.77:094:41Waxing Crescent14Sat
15Sun9:093.59:353.22:37-0.63:15-0.77:094:42Waxing Crescent15Sun
16Mon9:593.310:273.23:26-0.53:56-0.67:084:43Waxing Crescent16Mon
17Tue10:513.011:233.24:22-0.34:43-0.57:084:44Waxing Crescent17Tue
18Wed11:482.85:38-0.15:38-0.37:074:45First Quarter18Wed
19Thu12:223.112:482.67:120.06:42-0.27:074:46First Quarter19Thu
20Fri1:253.01:532.48:300.17:58-0.17:064:48First Quarter20Fri
21Sat2:352.93:042.49:390.09:16-0.17:054:49Waxing Gibbous21Sat
22Sun3:463.04:122.410:38-0.110:21-0.17:054:50Waxing Gibbous22Sun
23Mon4:483.05:092.611:30-0.211:15-0.27:044:51Waxing Gibbous23Mon
24Tue5:403.15:592.712:17-0.27:034:52Waxing Gibbous24Tue
25Wed6:273.16:452.812:02-0.312:59-0.37:034:54Full Moon25Wed
26Thu7:093.17:282.912:44-0.31:36-0.47:024:55Full Moon26Thu
27Fri7:483.18:092.91:22-0.32:09-0.47:014:56Full Moon27Fri
28Sat8:233.08:472.81:55-0.32:36-0.37:004:57Full Moon28Sat
29Sun8:572.99:232.72:25-0.22:58-0.36:594:59Waning Gibbous29Sun
30Mon9:302.79:592.62:57-0.13:20-0.26:585:00Waning Gibbous30Mon
31Tue10:042.510:352.53:310.03:480.06:575:01Waning Gibbous31Tue
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 5:46 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 100% 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 Full Moon (100% 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