Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 00m at 4:18 am (-0.3 ft)
Next high tide : 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 - Mar 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:452.610:122.83:23-0.13:26-0.26:195:37Waning Gibbous1Mon
2Tue10:292.410:582.84:030.04:05-0.16:175:38Waning Gibbous2Tue
3Wed11:202.311:512.74:510.24:530.06:165:40Third Quarter3Wed
4Thu12:162.35:510.25:510.16:145:41Third Quarter4Thu
5Fri12:512.71:202.37:120.37:000.16:125:42Third Quarter5Fri
6Sat1:592.82:322.48:550.28:250.06:115:43Third Quarter6Sat
7Sun3:132.93:452.610:04-0.19:58-0.26:095:44Waning Crescent7Sun
8Mon4:223.14:483.010:57-0.311:05-0.46:085:45Waning Crescent8Mon
9Tue5:203.45:433.311:45-0.66:065:46Waning Crescent9Tue
10Wed6:123.66:343.612:02-0.712:30-0.86:045:47New Moon10Wed
11Thu7:013.67:233.812:55-0.81:13-0.96:035:49New Moon11Thu
12Fri7:493.68:113.81:45-0.91:53-0.96:015:50New Moon12Fri
13Sat8:363.48:573.72:33-0.82:31-0.85:595:51Waxing Crescent13Sat
14Sun10:233.210:453.54:19-0.64:06-0.66:586:52Waxing Crescent14Sun
15Mon11:112.911:343.25:06-0.34:42-0.36:566:53Waxing Crescent15Mon
16Tue12:022.66:020.05:220.06:546:54Waxing Crescent16Tue
17Wed12:262.912:562.47:110.26:090.26:536:55First Quarter17Wed
18Thu1:222.61:542.28:210.47:100.46:516:56First Quarter18Thu
19Fri2:252.42:592.19:270.58:490.56:496:57First Quarter19Fri
20Sat3:392.34:102.110:260.510:140.56:486:58First Quarter20Sat
21Sun4:492.35:112.211:160.411:120.46:467:00Waxing Gibbous21Sun
22Mon5:412.45:592.411:580.311:590.36:447:01Waxing Gibbous22Mon
23Tue6:232.56:392.612:340.26:437:02Waxing Gibbous23Tue
24Wed6:582.67:142.812:410.11:080.06:417:03Waxing Gibbous24Wed
25Thu7:292.77:463.01:20-0.11:37-0.16:397:04Full Moon25Thu
26Fri8:002.88:193.11:57-0.22:02-0.26:387:05Full Moon26Fri
27Sat8:322.88:523.22:31-0.22:26-0.26:367:06Full Moon27Sat
28Sun9:072.89:283.23:03-0.22:54-0.26:347:07Full Moon28Sun
29Mon9:452.810:063.23:35-0.23:25-0.26:337:08Waning Gibbous29Mon
30Tue10:262.710:493.24:09-0.14:02-0.26:317:09Waning Gibbous30Tue
31Wed11:132.611:383.14:480.04:44-0.16:297:10Waning Gibbous31Wed
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 7:12 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 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