Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 6:52 am (0.2 ft)
Next high tide (tomorrow) : in 1h 58m at 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 - Mar 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:042.512:412.06:180.56:150.26:205:37First Quarter1Mon
2Tue1:042.51:462.08:100.57:240.26:185:38First Quarter2Tue
3Wed2:142.62:592.29:370.38:450.16:165:39Waxing Gibbous3Wed
4Thu3:302.84:082.510:310.010:06-0.26:155:40Waxing Gibbous4Thu
5Fri4:353.05:062.911:18-0.311:10-0.56:135:41Waxing Gibbous5Fri
6Sat5:303.35:573.312:01-0.56:125:42Waxing Gibbous6Sat
7Sun6:213.56:473.612:06-0.712:42-0.86:105:44Full Moon7Sun
8Mon7:103.67:353.912:59-0.91:23-0.96:085:45Full Moon8Mon
9Tue7:583.68:243.91:50-1.02:02-0.96:075:46Full Moon9Tue
10Wed8:463.49:123.92:39-0.92:41-0.86:055:47Waning Gibbous10Wed
11Thu9:353.210:033.73:29-0.73:20-0.66:045:48Waning Gibbous11Thu
12Fri10:262.910:573.44:23-0.44:02-0.46:025:49Waning Gibbous12Fri
13Sat11:202.611:563.05:29-0.14:52-0.16:005:50Third Quarter13Sat
14Sun12:202.46:440.16:020.25:595:51Third Quarter14Sun
15Mon1:002.71:242.27:550.37:500.45:575:52Third Quarter15Mon
16Tue2:112.52:372.29:010.49:100.45:555:54Third Quarter16Tue
17Wed3:242.53:462.29:580.410:110.35:545:55Waning Crescent17Wed
18Thu4:242.54:422.410:440.311:000.25:525:56Waning Crescent18Thu
19Fri5:122.65:282.611:230.211:420.15:505:57Waning Crescent19Fri
20Sat5:522.76:072.811:560.05:495:58Waning Crescent20Sat
21Sun6:282.76:422.912:190.012:26-0.15:475:59New Moon21Sun
22Mon7:012.87:133.012:55-0.112:53-0.25:456:00New Moon22Mon
23Tue7:322.87:433.11:28-0.11:18-0.25:446:01New Moon23Tue
24Wed8:032.78:133.11:58-0.11:44-0.25:426:02New Moon24Wed
25Thu8:352.78:453.02:26-0.12:12-0.25:406:03Waxing Crescent25Thu
26Fri9:102.69:202.92:540.02:44-0.15:386:04Waxing Crescent26Fri
27Sat9:492.410:002.93:250.13:190.05:376:05Waxing Crescent27Sat
28Sun10:332.310:472.84:020.24:010.15:356:07Waxing Crescent28Sun
29Mon11:242.311:402.74:490.44:500.25:336:08First Quarter29Mon
30Tue12:212.35:510.45:510.35:326:09First Quarter30Tue
31Wed12:412.71:252.37:200.47:030.35:306:10First 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 3:56 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 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