Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 6:52 am (0.2 ft)
Next high tide (tomorrow) : in 5h 25m at 1:01 am (2.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:20 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jun 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:212.95:573.811:22-0.15:158:12Waxing Gibbous1Tue
2Wed6:203.06:503.912:35-0.112:14-0.25:158:13Waxing Gibbous2Wed
3Thu7:133.17:413.91:27-0.21:04-0.25:148:14Full Moon3Thu
4Fri8:043.18:303.92:17-0.21:54-0.25:148:14Full Moon4Fri
5Sat8:533.19:183.83:04-0.22:41-0.15:148:15Full Moon5Sat
6Sun9:413.110:043.63:47-0.23:250.05:138:16Waning Gibbous6Sun
7Mon10:283.010:493.34:280.04:050.25:138:16Waning Gibbous7Mon
8Tue11:162.911:343.15:080.14:460.45:138:17Waning Gibbous8Tue
9Wed12:042.85:480.35:330.65:138:17Waning Gibbous9Wed
10Thu12:202.812:532.76:290.46:340.75:138:18Third Quarter10Thu
11Fri1:042.61:392.67:090.57:510.85:128:19Third Quarter11Fri
12Sat1:492.52:252.67:480.59:010.85:128:19Third Quarter12Sat
13Sun2:362.33:142.78:290.610:050.85:128:19Third Quarter13Sun
14Mon3:322.34:082.79:150.511:010.75:128:20Waning Crescent14Mon
15Tue4:322.35:012.910:050.511:510.65:128:20Waning Crescent15Tue
16Wed5:272.35:473.110:560.45:128:21Waning Crescent16Wed
17Thu6:132.56:303.212:370.411:43 AM0.35:128:21Waning Crescent17Thu
18Fri6:572.67:133.41:220.312:290.15:138:21New Moon18Fri
19Sat7:412.87:573.62:040.11:160.05:138:22New Moon19Sat
20Sun8:262.98:413.62:440.02:030.05:138:22New Moon20Sun
21Mon9:123.19:273.73:220.02:50-0.15:138:22New Moon21Mon
22Tue9:593.210:133.63:58-0.13:37-0.15:138:22Waxing Crescent22Tue
23Wed10:483.211:023.54:35-0.14:270.05:148:22Waxing Crescent23Wed
24Thu11:413.311:543.35:16-0.15:230.15:148:23Waxing Crescent24Thu
25Fri12:363.46:030.06:320.35:148:23First Quarter25Fri
26Sat12:493.11:323.46:550.07:560.35:158:23First Quarter26Sat
27Sun1:462.92:313.47:520.19:160.45:158:23First Quarter27Sun
28Mon2:472.83:353.58:520.110:270.35:158:23First Quarter28Mon
29Tue3:552.74:413.59:590.111:290.25:168:23Waxing Gibbous29Tue
30Wed5:032.75:423.611:040.15:168:23Waxing Gibbous30Wed
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 3:56 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 transitional phase. Tonight's moon is 62% 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 shifting between spring and neap.

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 Third Quarter (62% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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