Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 5:39 pm (0.6 ft)
Next high tide : in 1h 38m at 11:59 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:513.03:182.69:400.29:360.16:524:18Waxing Gibbous1Fri
2Sat3:533.14:162.610:340.210:210.16:534:18Waxing Gibbous2Sat
3Sun4:463.25:062.611:220.111:000.16:544:18Waxing Gibbous3Sun
4Mon5:323.25:512.712:050.16:554:17Waxing Gibbous4Mon
5Tue6:133.26:322.712:430.06:564:17Full Moon5Tue
6Wed6:523.27:122.712:060.01:200.06:564:17Full Moon6Wed
7Thu7:273.27:492.712:380.01:530.06:574:17Full Moon7Thu
8Fri8:013.18:262.71:130.02:240.06:584:17Full Moon8Fri
9Sat8:343.09:032.61:490.02:530.16:594:17Waning Gibbous9Sat
10Sun9:072.99:412.52:250.13:200.27:004:17Waning Gibbous10Sun
11Mon9:432.710:222.43:040.23:510.37:014:17Waning Gibbous11Mon
12Tue10:242.611:062.43:460.44:280.37:024:17Waning Gibbous12Tue
13Wed11:092.511:542.44:330.55:120.47:024:17Third Quarter13Wed
14Thu11:592.45:300.66:030.47:034:18Third Quarter14Thu
15Fri12:452.512:532.46:390.66:580.37:044:18Third Quarter15Fri
16Sat1:402.61:532.38:000.57:560.27:054:18Third Quarter16Sat
17Sun2:412.83:002.49:220.38:580.07:054:18Waning Crescent17Sun
18Mon3:433.14:042.610:230.09:57-0.27:064:19Waning Crescent18Mon
19Tue4:403.45:022.811:16-0.310:52-0.47:074:19Waning Crescent19Tue
20Wed5:333.75:563.012:07-0.57:074:20New Moon20Wed
21Thu6:253.96:483.212:57-0.77:084:20New Moon21Thu
22Fri7:164.07:403.312:38-0.71:46-0.87:084:20New Moon22Fri
23Sat8:074.08:313.41:31-0.82:34-0.87:094:21Waxing Crescent23Sat
24Sun8:583.99:243.32:24-0.73:21-0.77:094:22Waxing Crescent24Sun
25Mon9:503.610:183.23:18-0.64:10-0.57:094:22Waxing Crescent25Mon
26Tue10:453.311:153.14:18-0.35:04-0.47:104:23Waxing Crescent26Tue
27Wed11:413.05:37-0.16:03-0.27:104:23First Quarter27Wed
28Thu12:153.012:392.76:580.17:010.07:104:24First Quarter28Thu
29Fri1:162.91:402.48:090.27:590.17:114:25First Quarter29Fri
30Sat2:202.82:442.29:140.38:550.27:114:26First Quarter30Sat
31Sun3:252.73:482.210:120.39:510.27:114:26Waxing 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 2:49 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 transitional phase. Tonight's moon is 72% 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 shifting between spring and neap.

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 Waning Gibbous (72% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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