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 1m 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 - Sep 2030

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:323.710:503.23:49-0.14:320.16:137:19Waxing Crescent1Sun
2Mon11:223.611:423.04:29-0.15:240.36:147:17Waxing Crescent2Mon
3Tue12:173.55:160.16:340.46:157:16First Quarter3Tue
4Wed12:402.91:183.46:130.28:070.56:167:14First Quarter4Wed
5Thu1:422.82:243.37:230.39:260.56:177:12First Quarter5Thu
6Fri2:502.83:363.38:590.410:320.46:187:11Waxing Gibbous6Fri
7Sat4:032.94:463.410:300.311:280.26:197:09Waxing Gibbous7Sat
8Sun5:113.15:463.511:350.26:207:07Waxing Gibbous8Sun
9Mon6:083.36:373.612:160.112:290.06:217:06Waxing Gibbous9Mon
10Tue6:583.57:243.612:590.01:19-0.16:227:04Full Moon10Tue
11Wed7:443.78:073.61:38-0.12:04-0.16:237:02Full Moon11Wed
12Thu8:283.78:493.52:13-0.12:450.06:247:00Full Moon12Thu
13Fri9:093.79:293.32:43-0.13:220.16:256:59Full Moon13Fri
14Sat9:483.510:083.13:100.03:550.26:266:57Waning Gibbous14Sat
15Sun10:253.310:472.93:370.14:260.46:276:55Waning Gibbous15Sun
16Mon11:033.111:292.74:090.34:590.66:286:54Waning Gibbous16Mon
17Tue11:432.94:450.55:430.86:296:52Waning Gibbous17Tue
18Wed12:152.512:282.75:280.67:080.96:306:50Third Quarter18Wed
19Thu1:052.31:192.66:190.88:441.06:316:48Third Quarter19Thu
20Fri2:002.22:172.67:220.99:490.96:326:47Third Quarter20Fri
21Sat3:032.33:272.68:390.910:420.86:336:45Third Quarter21Sat
22Sun4:112.44:352.710:050.811:240.66:346:43Waning Crescent22Sun
23Mon5:062.65:252.911:080.66:356:42Waning Crescent23Mon
24Tue5:512.96:073.112:000.511:56 AM0.36:366:40Waning Crescent24Tue
25Wed6:313.26:473.312:320.212:400.16:376:38Waning Crescent25Wed
26Thu7:123.57:293.41:010.01:24-0.16:386:36New Moon26Thu
27Fri7:543.88:123.51:32-0.12:07-0.26:396:35New Moon27Fri
28Sat8:374.08:573.42:06-0.22:51-0.26:406:33New Moon28Sat
29Sun9:234.09:443.42:44-0.33:35-0.26:416:31Waxing Crescent29Sun
30Mon10:114.010:343.23:25-0.24:23-0.16:426:30Waxing Crescent30Mon
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