Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 22m at 11:38 pm (0.2 ft)
Next high tide (tomorrow) : 5:13 am (2.7 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:23 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jul 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:012.46:303.112:170.511:36 AM0.45:178:23Waxing Gibbous1Mon
2Tue6:442.57:093.31:020.412:220.35:188:22Full Moon2Tue
3Wed7:252.77:473.41:440.21:060.25:188:22Full Moon3Wed
4Thu8:062.88:273.52:240.11:490.15:198:22Full Moon4Thu
5Fri8:483.09:083.52:590.02:320.15:208:22Full Moon5Fri
6Sat9:313.19:503.53:310.03:140.15:208:21Waning Gibbous6Sat
7Sun10:163.210:343.44:030.03:580.15:218:21Waning Gibbous7Sun
8Mon11:033.211:223.34:37-0.14:460.25:228:21Waning Gibbous8Mon
9Tue11:543.35:170.05:420.35:228:20Waning Gibbous9Tue
10Wed12:143.212:483.36:040.06:520.45:238:20Third Quarter10Wed
11Thu1:093.01:443.46:580.08:220.45:248:19Third Quarter11Thu
12Fri2:072.92:453.47:560.19:440.45:258:19Third Quarter12Fri
13Sat3:122.83:513.59:000.110:530.35:258:18Waning Crescent13Sat
14Sun4:212.84:593.610:120.111:520.15:268:18Waning Crescent14Sun
15Mon5:282.96:003.711:210.05:278:17Waning Crescent15Mon
16Tue6:263.16:553.812:470.012:21-0.15:288:16Waning Crescent16Tue
17Wed7:203.37:463.81:37-0.11:16-0.15:298:16New Moon17Wed
18Thu8:103.48:343.82:24-0.22:07-0.15:298:15New Moon18Thu
19Fri8:583.49:183.73:07-0.22:53-0.15:308:14New Moon19Fri
20Sat9:453.410:013.53:45-0.13:350.05:318:14Waxing Crescent20Sat
21Sun10:293.310:423.34:190.04:130.25:328:13Waxing Crescent21Sun
22Mon11:143.211:223.04:490.14:510.45:338:12Waxing Crescent22Mon
23Tue11:583.05:150.35:340.55:348:11Waxing Crescent23Tue
24Wed12:032.812:422.95:450.46:250.75:358:10First Quarter24Wed
25Thu12:452.61:262.86:230.57:310.85:368:09First Quarter25Thu
26Fri1:282.42:122.77:080.68:460.95:378:08First Quarter26Fri
27Sat2:162.33:042.77:590.79:570.85:388:07First Quarter27Sat
28Sun3:132.24:082.78:570.710:580.85:388:06Waxing Gibbous28Sun
29Mon4:212.25:082.910:030.611:480.65:398:05Waxing Gibbous29Mon
30Tue5:222.45:573.111:070.55:408:04Waxing Gibbous30Tue
31Wed6:112.66:393.312:330.411:59 AM0.35:418:03Waxing 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 2:25 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 20% 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 Waning Crescent (20% 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