Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 55m at 5:39 pm (0.6 ft)
Next high tide (tomorrow) : 12:12 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Mar 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:002.86:152.712:27-0.16:205:36Waxing Gibbous1Thu
2Fri6:402.96:562.912:23-0.11:01-0.26:195:37Full Moon2Fri
3Sat7:152.97:343.01:00-0.21:29-0.36:175:38Full Moon3Sat
4Sun7:482.98:083.01:33-0.21:53-0.36:165:40Full Moon4Sun
5Mon8:182.88:403.02:03-0.22:13-0.36:145:41Full Moon5Mon
6Tue8:482.79:102.92:32-0.22:33-0.26:125:42Waning Gibbous6Tue
7Wed9:192.59:402.83:02-0.12:58-0.16:115:43Waning Gibbous7Wed
8Thu9:532.310:132.63:340.13:280.06:095:44Waning Gibbous8Thu
9Fri10:302.110:522.54:110.24:030.26:075:45Waning Gibbous9Fri
10Sat11:142.011:392.44:550.44:440.36:065:46Third Quarter10Sat
11Sun1:051.96:520.66:370.47:046:48Third Quarter11Sun
12Mon1:352.32:051.88:210.67:420.57:036:49Third Quarter12Mon
13Tue2:442.43:181.910:120.59:020.47:016:50Third Quarter13Tue
14Wed4:032.54:352.111:110.310:350.26:596:51Waning Crescent14Wed
15Thu5:132.75:372.511:560.111:45-0.16:586:52Waning Crescent15Thu
16Fri6:073.06:282.912:36-0.26:566:53Waning Crescent16Fri
17Sat6:553.37:163.312:40-0.41:14-0.56:546:54New Moon17Sat
18Sun7:423.48:033.61:31-0.61:51-0.76:536:55New Moon18Sun
19Mon8:293.58:493.92:22-0.82:29-0.86:516:56New Moon19Mon
20Tue9:153.49:363.93:11-0.83:06-0.86:496:57New Moon20Tue
21Wed10:033.210:243.83:59-0.73:45-0.76:486:59Waxing Crescent21Wed
22Thu10:533.011:163.64:50-0.54:26-0.56:467:00Waxing Crescent22Thu
23Fri11:462.75:51-0.25:12-0.36:447:01Waxing Crescent23Fri
24Sat12:123.312:452.57:080.06:080.06:437:02First Quarter24Sat
25Sun1:153.01:482.38:250.37:290.36:417:03First Quarter25Sun
26Mon2:262.72:592.29:370.49:190.46:397:04First Quarter26Mon
27Tue3:462.64:132.310:400.410:380.36:377:05Waxing Gibbous27Tue
28Wed4:572.55:162.411:320.311:360.36:367:06Waxing Gibbous28Wed
29Thu5:512.66:082.712:140.26:347:07Waxing Gibbous29Thu
30Fri6:352.76:512.812:230.212:500.16:327:08Waxing Gibbous30Fri
31Sat7:122.77:303.01:030.11:200.06:317:09Full Moon31Sat
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 8:55 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 transitional phase. Tonight's moon is 72% 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 Waning Gibbous (72% 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