Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 3h 43m at 1:32 am (-0.1 ft)
Next high tide (tomorrow) : 7:12 am (3.1 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:113.05:463.411:34-0.15:437:43Waxing Gibbous1Wed
2Thu6:073.26:373.812:05-0.212:15-0.35:427:44Waxing Gibbous2Thu
3Fri6:593.37:264.11:00-0.412:57-0.55:407:45Full Moon3Fri
4Sat7:503.38:154.21:53-0.61:41-0.65:397:46Full Moon4Sat
5Sun8:403.39:044.22:45-0.72:25-0.55:387:47Full Moon5Sun
6Mon9:303.29:544.13:35-0.63:10-0.45:377:48Waning Gibbous6Mon
7Tue10:213.110:473.84:26-0.43:56-0.25:367:49Waning Gibbous7Tue
8Wed11:152.911:433.55:21-0.24:450.05:347:50Waning Gibbous8Wed
9Thu12:122.76:250.15:440.35:337:51Waning Gibbous9Thu
10Fri12:433.11:132.67:320.37:190.55:327:52Third Quarter10Fri
11Sat1:452.92:152.58:330.48:460.65:317:53Third Quarter11Sat
12Sun2:482.63:202.59:290.59:550.65:307:54Third Quarter12Sun
13Mon3:522.54:232.610:170.510:520.65:297:55Third Quarter13Mon
14Tue4:492.55:172.710:580.411:400.55:287:56Waning Crescent14Tue
15Wed5:382.56:012.911:320.45:277:57Waning Crescent15Wed
16Thu6:192.56:383.112:230.412:010.35:267:58Waning Crescent16Thu
17Fri6:572.67:123.21:020.312:290.25:257:59Waning Crescent17Fri
18Sat7:322.67:433.21:400.21:000.25:248:00New Moon18Sat
19Sun8:082.68:153.32:170.21:330.15:238:01New Moon19Sun
20Mon8:432.68:493.32:530.12:080.15:238:02New Moon20Mon
21Tue9:202.69:263.23:260.22:450.25:228:03New Moon21Tue
22Wed9:592.510:053.13:580.23:240.25:218:04Waxing Crescent22Wed
23Thu10:412.510:493.14:300.34:040.35:208:05Waxing Crescent23Thu
24Fri11:292.511:383.05:100.44:500.45:208:06Waxing Crescent24Fri
25Sat12:222.56:000.55:440.55:198:06Waxing Crescent25Sat
26Sun12:322.91:182.67:020.56:500.55:188:07First Quarter26Sun
27Mon1:292.92:162.78:040.48:070.55:188:08First Quarter27Mon
28Tue2:292.93:183.09:010.29:330.45:178:09First Quarter28Tue
29Wed3:342.94:213.39:550.110:490.25:178:10Waxing Gibbous29Wed
30Thu4:402.95:203.610:47-0.111:510.05:168:11Waxing Gibbous30Thu
31Fri5:413.06:143.911:36-0.25:168:11Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

Show All
What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 4:22 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 5% 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 Waning Crescent (5% 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