Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 05m at 7:53 am (0.6 ft)
Next high tide : 3:02 pm (2.9 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:32 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Feb 2080

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:142.93:542.310:250.09:33-0.26:565:02Waxing Gibbous1Thu
2Fri4:263.14:582.511:22-0.210:45-0.46:555:03Waxing Gibbous2Fri
3Sat5:273.45:542.812:14-0.56:545:05Waxing Gibbous3Sat
4Sun6:213.66:463.11:02-0.76:535:06Full Moon4Sun
5Mon7:123.77:363.312:44-0.81:46-0.86:525:07Full Moon5Mon
6Tue8:003.78:253.41:37-0.92:27-0.86:515:08Full Moon6Tue
7Wed8:463.59:123.42:27-0.83:04-0.76:505:10Waning Gibbous7Wed
8Thu9:323.210:003.33:14-0.63:38-0.66:495:11Waning Gibbous8Thu
9Fri10:172.910:483.14:02-0.44:10-0.46:485:12Waning Gibbous9Fri
10Sat11:042.511:392.94:55-0.14:41-0.16:465:13Waning Gibbous10Sat
11Sun11:532.25:590.25:180.16:455:15Third Quarter11Sun
12Mon12:312.612:451.97:120.46:030.36:445:16Third Quarter12Mon
13Tue1:292.41:471.78:260.57:010.56:435:17Third Quarter13Tue
14Wed2:422.33:071.79:340.58:380.56:415:18Third Quarter14Wed
15Thu3:572.34:171.810:310.510:060.46:405:20Waning Crescent15Thu
16Fri4:542.45:091.911:180.311:000.36:395:21Waning Crescent16Fri
17Sat5:402.55:502.111:590.211:440.16:375:22Waning Crescent17Sat
18Sun6:182.76:272.312:360.06:365:23Waning Crescent18Sun
19Mon6:512.87:012.512:240.01:10-0.16:345:25New Moon19Mon
20Tue7:212.97:332.71:01-0.21:39-0.26:335:26New Moon20Tue
21Wed7:522.98:062.81:36-0.22:03-0.36:325:27New Moon21Wed
22Thu8:242.98:412.92:08-0.22:24-0.36:305:28New Moon22Thu
23Fri8:582.89:173.02:40-0.22:49-0.46:295:29Waxing Crescent23Fri
24Sat9:362.79:573.03:15-0.13:19-0.36:275:31Waxing Crescent24Sat
25Sun10:202.510:422.93:540.03:55-0.36:265:32Waxing Crescent25Sun
26Mon11:092.311:332.94:410.14:40-0.26:245:33First Quarter26Mon
27Tue12:052.25:420.25:340.06:235:34First Quarter27Tue
28Wed12:322.81:092.17:150.36:390.16:215:35First Quarter28Wed
29Thu1:402.82:222.19:030.27:590.16:205:36First Quarter29Thu
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 11:27 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 62% 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 First Quarter (62% 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