Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 3:53 pm (-0.3 ft)
Next high tide : in 1h 09m at 10:07 am (3.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (9% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Nov 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:573.37:102.812:320.21:150.17:185:41New Moon1Mon
2Tue7:303.47:452.91:000.11:520.17:195:40New Moon2Tue
3Wed8:053.58:222.91:300.02:270.07:205:38New Moon3Wed
4Thu8:433.59:022.92:040.03:010.07:215:37New Moon4Thu
5Fri9:243.59:452.92:400.03:360.07:235:36Waxing Crescent5Fri
6Sat10:073.410:322.93:200.04:140.17:245:35Waxing Crescent6Sat
7Sun9:553.310:242.83:030.13:590.26:254:34Waxing Crescent7Sun
8Mon10:493.211:212.83:520.24:540.36:264:33Waxing Crescent8Mon
9Tue11:483.14:510.36:070.36:274:32First Quarter9Tue
10Wed12:222.912:493.06:090.47:240.26:294:31First Quarter10Wed
11Thu1:263.01:543.07:560.48:290.16:304:30First Quarter11Thu
12Fri2:323.23:023.09:180.29:260.06:314:29Waxing Gibbous12Fri
13Sat3:383.44:063.110:200.010:17-0.26:324:28Waxing Gibbous13Sat
14Sun4:363.65:023.211:15-0.211:03-0.36:334:27Waxing Gibbous14Sun
15Mon5:283.85:543.312:06-0.36:354:26Full Moon15Mon
16Tue6:184.06:433.312:54-0.46:364:26Full Moon16Tue
17Wed7:053.97:303.312:30-0.41:40-0.46:374:25Full Moon17Wed
18Thu7:513.88:173.21:12-0.42:24-0.36:384:24Full Moon18Thu
19Fri8:373.69:033.01:52-0.23:05-0.16:394:23Waning Gibbous19Fri
20Sat9:213.49:512.92:30-0.13:460.16:404:23Waning Gibbous20Sat
21Sun10:073.110:412.73:090.14:310.26:424:22Waning Gibbous21Sun
22Mon10:542.811:332.53:520.45:270.46:434:21Waning Gibbous22Mon
23Tue11:432.64:420.66:280.56:444:21Third Quarter23Tue
24Wed12:282.412:342.45:500.77:230.66:454:20Third Quarter24Wed
25Thu1:222.41:262.37:260.88:120.66:464:20Third Quarter25Thu
26Fri2:192.42:252.28:400.78:570.56:474:19Third Quarter26Fri
27Sat3:162.53:262.29:380.69:380.46:484:19Waning Crescent27Sat
28Sun4:042.74:162.310:270.410:140.36:494:19Waning Crescent28Sun
29Mon4:452.94:582.511:110.210:490.26:504:18Waning Crescent29Mon
30Tue5:233.15:372.611:530.111:240.06:514:18Waning Crescent30Tue
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 1:00 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 9% 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 Crescent (9% 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