Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 26, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 1:11 am (0.6 ft)
Next high tide : in 20m at 6:45 pm (3.0 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jun 2088

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:272.66:533.312:360.412:150.35:158:13Waxing Gibbous1Tue
2Wed7:092.67:333.31:170.312:480.35:158:14Full Moon2Wed
3Thu7:502.78:113.31:550.21:210.35:148:14Full Moon3Thu
4Fri8:282.78:463.32:320.21:560.25:148:15Full Moon4Fri
5Sat9:052.79:203.23:070.22:320.35:148:16Full Moon5Sat
6Sun9:412.79:543.13:400.23:090.35:138:16Waning Gibbous6Sun
7Mon10:182.710:303.04:110.23:460.45:138:17Waning Gibbous7Mon
8Tue10:572.611:092.94:410.34:250.55:138:18Waning Gibbous8Tue
9Wed11:402.611:522.85:150.45:090.65:138:18Waning Gibbous9Wed
10Thu12:252.75:540.46:000.75:138:19Third Quarter10Thu
11Fri12:392.71:142.76:400.47:020.75:138:19Third Quarter11Fri
12Sat1:302.72:052.97:300.38:120.75:138:20Third Quarter12Sat
13Sun2:262.73:023.18:230.39:360.55:138:20Third Quarter13Sun
14Mon3:282.74:043.39:200.110:530.35:138:20Waning Crescent14Mon
15Tue4:352.85:063.510:200.011:530.15:138:21Waning Crescent15Tue
16Wed5:383.06:043.811:20-0.25:138:21Waning Crescent16Wed
17Thu6:353.26:594.112:49-0.212:17-0.35:138:22New Moon17Thu
18Fri7:303.47:534.21:43-0.41:13-0.55:138:22New Moon18Fri
19Sat8:243.58:464.22:35-0.52:10-0.55:138:22New Moon19Sat
20Sun9:173.69:384.13:26-0.53:06-0.55:138:22Waxing Crescent20Sun
21Mon10:093.610:303.94:14-0.54:00-0.35:148:22Waxing Crescent21Mon
22Tue11:033.511:233.65:04-0.34:57-0.15:148:23Waxing Crescent22Tue
23Wed11:593.45:56-0.26:040.15:148:23Waxing Crescent23Wed
24Thu12:173.312:553.36:510.07:170.35:158:23First Quarter24Thu
25Fri1:123.01:523.27:440.28:260.55:158:23First Quarter25Fri
26Sat2:062.72:503.18:340.39:300.65:158:23First Quarter26Sat
27Sun3:042.53:503.09:230.410:290.65:168:23First Quarter27Sun
28Mon4:062.44:503.010:110.511:220.65:168:23Waxing Gibbous28Mon
29Tue5:072.45:423.010:570.55:178:23Waxing Gibbous29Tue
30Wed5:592.46:283.112:080.611:40 AM0.55:178:23Waxing 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 9:58 pm — 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 92% 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 Gibbous (92% 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