Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 16, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 23m at 3:28 am (-0.4 ft)
Next high tide : 9:14 am (3.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (4% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Aug 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:202.32:532.77:490.69:530.95:428:02Third Quarter1Sun
2Mon3:172.23:522.78:390.710:520.85:438:01Waning Crescent2Mon
3Tue4:242.24:552.89:370.711:440.75:448:00Waning Crescent3Tue
4Wed5:242.35:482.910:390.65:457:59Waning Crescent4Wed
5Thu6:112.46:313.012:310.611:36 AM0.55:467:58Waning Crescent5Thu
6Fri6:532.67:103.21:150.512:250.45:477:57Waning Crescent6Fri
7Sat7:332.77:493.31:550.31:120.25:487:55New Moon7Sat
8Sun8:132.98:273.42:320.21:560.15:497:54New Moon8Sun
9Mon8:533.19:073.53:040.12:390.15:507:53New Moon9Mon
10Tue9:353.29:483.43:320.13:220.15:517:52Waxing Crescent10Tue
11Wed10:193.310:313.43:590.04:050.15:527:50Waxing Crescent11Wed
12Thu11:053.411:183.24:310.04:530.25:537:49Waxing Crescent12Thu
13Fri11:553.45:080.05:490.35:547:47Waxing Crescent13Fri
14Sat12:093.012:483.45:530.16:590.45:557:46First Quarter14Sat
15Sun1:052.91:453.46:460.28:260.55:567:45First Quarter15Sun
16Mon2:052.72:483.47:470.39:480.55:577:43First Quarter16Mon
17Tue3:122.63:583.48:590.310:570.45:587:42Waxing Gibbous17Tue
18Wed4:252.75:083.510:250.311:550.25:597:40Waxing Gibbous18Wed
19Thu5:332.96:093.611:380.26:007:39Waxing Gibbous19Thu
20Fri6:303.17:033.712:480.112:370.06:017:37Waxing Gibbous20Fri
21Sat7:223.37:523.81:350.01:31-0.16:027:36Full Moon21Sat
22Sun8:113.48:373.72:19-0.12:20-0.16:037:34Full Moon22Sun
23Mon8:573.59:203.62:57-0.13:040.06:047:33Full Moon23Mon
24Tue9:403.510:013.43:31-0.13:430.16:057:31Waning Gibbous24Tue
25Wed10:223.410:413.23:590.04:200.26:067:30Waning Gibbous25Wed
26Thu11:033.211:212.94:250.14:560.46:077:28Waning Gibbous26Thu
27Fri11:433.14:520.35:380.66:087:27Waning Gibbous27Fri
28Sat12:032.712:242.95:260.56:320.86:097:25Third Quarter28Sat
29Sun12:472.51:062.86:060.67:530.96:107:23Third Quarter29Sun
30Mon1:352.31:532.76:550.89:130.96:117:22Third Quarter30Mon
31Tue2:292.22:502.67:520.810:210.96:127:20Third Quarter31Tue
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 6:21 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 4% 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 New Moon (4% 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