Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 31m at 11:40 pm (0.8 ft)
Next high tide (tomorrow) : 5:25 am (2.2 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:34 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2085

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:213.011:543.15:11-0.25:28-0.37:114:28First Quarter1Mon
2Tue12:182.66:350.06:24-0.17:114:29First Quarter2Tue
3Wed12:543.01:172.47:500.27:230.07:114:30First Quarter3Wed
4Thu1:572.92:222.29:000.28:260.17:114:31First Quarter4Thu
5Fri3:062.83:302.110:020.29:280.27:114:32Waxing Gibbous5Fri
6Sat4:102.84:312.210:560.210:230.17:114:33Waxing Gibbous6Sat
7Sun5:052.85:222.311:420.111:100.17:114:34Waxing Gibbous7Sun
8Mon5:512.96:072.412:240.17:114:35Waxing Gibbous8Mon
9Tue6:332.96:492.51:020.07:104:36Full Moon9Tue
10Wed7:102.97:272.612:29-0.11:37-0.17:104:37Full Moon10Wed
11Thu7:442.98:042.61:05-0.12:08-0.27:104:38Full Moon11Thu
12Fri8:152.98:392.61:39-0.12:35-0.27:104:39Full Moon12Fri
13Sat8:452.89:132.62:13-0.12:58-0.17:094:40Waning Gibbous13Sat
14Sun9:162.79:472.52:480.03:20-0.17:094:41Waning Gibbous14Sun
15Mon9:512.510:252.53:240.13:460.07:084:42Waning Gibbous15Mon
16Tue10:292.411:062.54:040.24:190.07:084:44Waning Gibbous16Tue
17Wed11:142.211:522.54:510.35:000.17:074:45Third Quarter17Wed
18Thu12:042.15:470.45:480.17:074:46Third Quarter18Thu
19Fri12:432.51:012.16:570.46:450.17:064:47Third Quarter19Fri
20Sat1:432.62:062.08:310.37:500.17:064:48Third Quarter20Sat
21Sun2:512.83:192.29:530.19:04-0.17:054:50Waning Crescent21Sun
22Mon4:013.04:272.410:52-0.110:17-0.37:044:51Waning Crescent22Mon
23Tue5:023.35:262.711:43-0.411:20-0.57:034:52Waning Crescent23Tue
24Wed5:573.66:193.012:32-0.67:034:53New Moon24Wed
25Thu6:483.87:103.312:18-0.81:18-0.87:024:54New Moon25Thu
26Fri7:383.88:003.51:14-0.92:01-0.97:014:56New Moon26Fri
27Sat8:263.78:503.52:06-0.92:41-0.97:004:57Waxing Crescent27Sat
28Sun9:153.59:393.52:58-0.83:20-0.86:594:58Waxing Crescent28Sun
29Mon10:043.210:313.33:50-0.63:59-0.66:584:59Waxing Crescent29Mon
30Tue10:552.811:253.14:51-0.34:39-0.46:585:01Waxing Crescent30Tue
31Wed11:492.56:040.05:25-0.16:575:02First Quarter31Wed
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 2:32 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 79% 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 Waxing Gibbous (79% 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