Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 5h 17m at 6:38 pm (0.7 ft)
Next high tide (tomorrow) : 1:01 am (2.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:20 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:213.38:512.71:42-0.12:460.06:524:18Waning Gibbous1Wed
2Thu9:033.29:362.72:230.03:180.16:534:18Waning Gibbous2Thu
3Fri9:483.110:262.73:060.13:560.16:544:17Waning Gibbous3Fri
4Sat10:383.011:202.83:550.24:430.16:554:17Waning Gibbous4Sat
5Sun11:332.94:530.35:390.16:564:17Third Quarter5Sun
6Mon12:182.812:312.86:060.36:410.16:574:17Third Quarter6Mon
7Tue1:183.01:332.77:380.37:450.06:584:17Third Quarter7Tue
8Wed2:213.12:412.79:040.28:51-0.16:594:17Waning Crescent8Wed
9Thu3:263.43:492.710:100.09:52-0.27:004:17Waning Crescent9Thu
10Fri4:273.64:502.911:07-0.210:48-0.37:004:17Waning Crescent10Fri
11Sat5:233.85:453.012:00-0.47:014:17New Moon11Sat
12Sun6:153.96:373.112:50-0.57:024:17New Moon12Sun
13Mon7:053.97:273.112:30-0.51:38-0.57:034:17New Moon13Mon
14Tue7:533.88:153.11:19-0.52:22-0.57:044:18New Moon14Tue
15Wed8:413.69:033.02:05-0.43:04-0.47:044:18Waxing Crescent15Wed
16Thu9:273.39:502.92:48-0.23:44-0.27:054:18Waxing Crescent16Thu
17Fri10:133.010:402.73:290.04:230.07:064:19Waxing Crescent17Fri
18Sat11:002.811:302.64:140.25:030.17:064:19Waxing Crescent18Sat
19Sun11:482.55:120.45:450.37:074:19First Quarter19Sun
20Mon12:212.512:372.36:380.66:290.47:074:20First Quarter20Mon
21Tue1:122.41:282.17:530.67:160.47:084:20First Quarter21Tue
22Wed2:062.42:272.08:570.68:070.47:084:21First Quarter22Wed
23Thu3:072.43:312.09:540.59:020.47:094:21Waxing Gibbous23Thu
24Fri4:022.54:252.110:430.49:540.37:094:22Waxing Gibbous24Fri
25Sat4:482.75:092.211:280.210:410.17:104:22Waxing Gibbous25Sat
26Sun5:272.95:492.412:100.17:104:23Waxing Gibbous26Sun
27Mon6:053.06:282.512:50-0.17:104:24Full Moon27Mon
28Tue6:443.27:082.712:06-0.21:28-0.27:114:24Full Moon28Tue
29Wed7:233.37:502.812:48-0.32:01-0.37:114:25Full Moon29Wed
30Thu8:043.38:332.91:31-0.32:32-0.37:114:26Full Moon30Thu
31Fri8:473.39:182.92:13-0.33:02-0.37:114:27Waning Gibbous31Fri
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 9:49 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 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 Third 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