Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, June 16, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 4:18 am (-0.3 ft)
Next high tide : in 4h 05m at 9:37 pm (4.1 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 - Sep 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:593.98:253.91:55-0.42:16-0.46:127:19Full Moon1Mon
2Tue8:474.09:123.82:36-0.43:06-0.46:137:18Full Moon2Tue
3Wed9:344.09:583.63:14-0.43:53-0.26:147:16Waning Gibbous3Wed
4Thu10:213.810:443.33:49-0.24:390.06:157:14Waning Gibbous4Thu
5Fri11:093.611:333.04:230.05:290.36:167:13Waning Gibbous5Fri
6Sat11:583.34:580.26:320.56:177:11Waning Gibbous6Sat
7Sun12:242.812:513.05:390.57:430.76:187:09Third Quarter7Sun
8Mon1:182.51:482.86:290.78:500.86:197:08Third Quarter8Mon
9Tue2:162.42:522.77:340.89:510.96:207:06Third Quarter9Tue
10Wed3:222.34:042.69:020.810:450.86:217:04Third Quarter10Wed
11Thu4:292.45:052.710:200.811:310.76:227:03Waning Crescent11Thu
12Fri5:242.55:512.811:150.76:237:01Waning Crescent12Fri
13Sat6:072.76:282.912:100.612:000.56:246:59Waning Crescent13Sat
14Sun6:452.97:003.112:450.412:420.36:256:57Waning Crescent14Sun
15Mon7:193.27:323.21:170.31:210.26:266:56New Moon15Mon
16Tue7:533.38:053.21:440.21:590.16:276:54New Moon16Tue
17Wed8:283.58:413.22:090.12:350.16:286:52New Moon17Wed
18Thu9:053.59:193.22:350.03:100.16:296:51New Moon18Thu
19Fri9:443.610:013.13:060.03:460.16:306:49Waxing Crescent19Fri
20Sat10:273.510:473.03:410.14:260.26:316:47Waxing Crescent20Sat
21Sun11:163.511:382.94:220.15:140.46:326:45Waxing Crescent21Sun
22Mon12:103.45:090.26:150.56:336:44First Quarter22Mon
23Tue12:362.81:103.36:060.47:470.56:346:42First Quarter23Tue
24Wed1:382.82:153.27:170.49:130.56:356:40First Quarter24Wed
25Thu2:462.83:253.38:510.410:190.36:366:39First Quarter25Thu
26Fri3:573.04:353.410:250.311:130.16:376:37Waxing Gibbous26Fri
27Sat5:043.35:363.511:310.16:386:35Waxing Gibbous27Sat
28Sun6:013.66:283.612:01-0.112:26-0.16:396:34Waxing Gibbous28Sun
29Mon6:523.87:173.712:44-0.21:17-0.26:406:32Full Moon29Mon
30Tue7:394.08:043.61:25-0.32:05-0.36:416:30Full Moon30Tue
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 12:57 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