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 41m at 9:41 am (0.7 ft)
Next high tide : 5:08 pm (2.8 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 - Dec 2083

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:462.55:100.66:060.56:524:18Third Quarter1Wed
2Thu12:342.412:402.46:190.66:570.46:534:17Third Quarter2Thu
3Fri1:282.61:382.47:400.67:500.36:544:17Third Quarter3Fri
4Sat2:272.82:432.59:020.48:450.16:554:17Waning Crescent4Sat
5Sun3:273.13:482.610:060.19:40-0.16:564:17Waning Crescent5Sun
6Mon4:243.44:472.711:01-0.110:33-0.36:574:17Waning Crescent6Mon
7Tue5:173.75:412.911:54-0.411:25-0.56:584:17New Moon7Tue
8Wed6:094.06:343.112:46-0.56:594:17New Moon8Wed
9Thu7:024.17:263.112:17-0.61:37-0.67:004:17New Moon9Thu
10Fri7:544.08:183.21:11-0.62:27-0.67:004:17New Moon10Fri
11Sat8:473.99:113.12:05-0.63:16-0.57:014:17Waxing Crescent11Sat
12Sun9:403.710:053.12:59-0.44:07-0.37:024:17Waxing Crescent12Sun
13Mon10:343.411:023.03:58-0.25:02-0.27:034:17Waxing Crescent13Mon
14Tue11:303.05:120.05:590.07:034:18First Quarter14Tue
15Wed12:022.912:272.76:360.26:530.17:044:18First Quarter15Wed
16Thu1:022.81:252.47:490.37:430.27:054:18First Quarter16Thu
17Fri2:022.82:252.28:550.48:310.37:054:18First Quarter17Fri
18Sat3:052.83:282.19:540.49:170.37:064:19Waxing Gibbous18Sat
19Sun4:032.84:242.110:440.310:010.37:074:19Waxing Gibbous19Sun
20Mon4:532.85:122.211:280.310:410.27:074:20Waxing Gibbous20Mon
21Tue5:362.95:542.312:090.27:084:20Waxing Gibbous21Tue
22Wed6:152.96:342.412:470.17:084:21Full Moon22Wed
23Thu6:522.97:122.41:250.17:094:21Full Moon23Thu
24Fri7:263.07:482.512:380.02:000.07:094:22Full Moon24Fri
25Sat7:592.98:242.51:170.02:330.07:094:22Full Moon25Sat
26Sun8:322.99:012.51:550.03:010.07:104:23Waning Gibbous26Sun
27Mon9:072.89:402.42:320.13:250.17:104:24Waning Gibbous27Mon
28Tue9:442.710:222.53:110.13:530.17:104:24Waning Gibbous28Tue
29Wed10:262.611:082.53:540.24:270.17:114:25Waning Gibbous29Wed
30Thu11:132.511:572.64:440.35:090.17:114:26Third Quarter30Thu
31Fri12:062.45:450.45:580.17:114:27Third Quarter31Fri
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 1:24 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 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