Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, June 15, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 3:28 am (-0.4 ft)
Next high tide : in 4h 21m at 8:44 pm (4.2 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:023.23:232.79:400.19:24-0.16:524:18Waning Crescent1Sat
2Sun4:033.54:262.810:41-0.110:20-0.36:534:18Waning Crescent2Sun
3Mon4:593.85:233.011:36-0.411:13-0.46:544:17Waning Crescent3Mon
4Tue5:534.06:173.112:28-0.56:554:17New Moon4Tue
5Wed6:454.17:093.212:05-0.61:20-0.66:564:17New Moon5Wed
6Thu7:374.18:003.212:57-0.62:09-0.66:574:17New Moon6Thu
7Fri8:273.98:513.21:49-0.52:57-0.56:584:17Waxing Crescent7Fri
8Sat9:183.79:423.02:39-0.43:44-0.36:594:17Waxing Crescent8Sat
9Sun10:093.410:362.93:30-0.24:33-0.17:004:17Waxing Crescent9Sun
10Mon11:023.011:322.84:270.15:260.07:014:17Waxing Crescent10Mon
11Tue11:562.75:450.36:190.27:014:17First Quarter11Tue
12Wed12:292.712:502.47:020.57:070.37:024:17First Quarter12Wed
13Thu1:252.61:452.28:090.67:520.47:034:17First Quarter13Thu
14Fri2:242.62:462.19:100.68:360.47:044:18First Quarter14Fri
15Sat3:242.63:462.110:030.59:210.47:044:18Waxing Gibbous15Sat
16Sun4:172.74:372.110:500.410:050.37:054:18Waxing Gibbous16Sun
17Mon5:012.85:202.211:320.310:460.27:064:19Waxing Gibbous17Mon
18Tue5:392.95:592.312:130.27:064:19Waxing Gibbous18Tue
19Wed6:153.06:362.412:530.17:074:19Full Moon19Wed
20Thu6:503.07:132.512:060.01:310.07:074:20Full Moon20Thu
21Fri7:253.17:502.612:46-0.12:05-0.17:084:20Full Moon21Fri
22Sat8:013.18:292.61:25-0.12:35-0.17:084:21Full Moon22Sat
23Sun8:393.19:102.72:04-0.13:01-0.17:094:21Waning Gibbous23Sun
24Mon9:203.09:552.72:45-0.13:30-0.17:094:22Waning Gibbous24Mon
25Tue10:042.910:432.73:280.04:05-0.17:104:23Waning Gibbous25Tue
26Wed10:532.711:352.84:180.14:48-0.17:104:23Third Quarter26Wed
27Thu11:462.65:180.25:39-0.17:104:24Third Quarter27Thu
28Fri12:312.912:442.56:340.36:36-0.17:114:25Third Quarter28Fri
29Sat1:303.01:482.48:070.27:40-0.17:114:25Third Quarter29Sat
30Sun2:353.12:592.49:290.18:52-0.27:114:26Waning Crescent30Sun
31Mon3:443.34:092.510:33-0.110:06-0.37:114:27Waning Crescent31Mon
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 12:06 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 0% 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 (0% 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