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 4h 21m 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 - May 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:332.94:193.210:090.010:470.15:437:43Waxing Gibbous1Sat
2Sun4:423.05:203.511:03-0.111:50-0.25:427:44Waxing Gibbous2Sun
3Mon5:433.16:153.811:51-0.35:407:45Waxing Gibbous3Mon
4Tue6:383.27:074.012:45-0.412:38-0.45:397:46Full Moon4Tue
5Wed7:303.37:574.11:38-0.51:25-0.55:387:47Full Moon5Wed
6Thu8:213.38:464.12:29-0.52:11-0.45:377:48Full Moon6Thu
7Fri9:103.29:353.93:17-0.52:56-0.35:367:49Full Moon7Fri
8Sat9:593.110:233.74:03-0.33:39-0.25:347:50Waning Gibbous8Sat
9Sun10:483.011:133.44:49-0.14:220.05:337:51Waning Gibbous9Sun
10Mon11:402.85:390.15:080.35:327:52Waning Gibbous10Mon
11Tue12:053.112:342.76:350.36:070.55:317:53Third Quarter11Tue
12Wed12:582.81:292.57:320.47:360.75:307:54Third Quarter12Wed
13Thu1:522.62:252.58:230.58:510.85:297:55Third Quarter13Thu
14Fri2:472.43:232.59:100.59:550.75:287:56Third Quarter14Fri
15Sat3:462.34:212.69:530.510:500.75:277:57Waning Crescent15Sat
16Sun4:432.35:112.710:330.511:380.55:267:58Waning Crescent16Sun
17Mon5:322.45:522.911:110.45:257:59Waning Crescent17Mon
18Tue6:132.46:293.112:220.411:47 AM0.35:248:00Waning Crescent18Tue
19Wed6:512.57:043.21:050.312:230.25:238:01New Moon19Wed
20Thu7:292.67:403.31:460.21:010.15:238:02New Moon20Thu
21Fri8:082.78:193.42:250.11:400.05:228:03New Moon21Fri
22Sat8:482.88:593.53:020.02:200.05:218:04New Moon22Sat
23Sun9:302.89:423.43:360.13:020.05:208:05Waxing Crescent23Sun
24Mon10:152.910:283.44:100.13:450.15:208:06Waxing Crescent24Mon
25Tue11:042.911:173.34:470.14:320.15:198:07Waxing Crescent25Tue
26Wed11:572.95:320.15:270.25:188:07Waxing Crescent26Wed
27Thu12:103.212:533.06:260.26:320.35:188:08First Quarter27Thu
28Fri1:063.11:513.17:250.17:540.45:178:09First Quarter28Fri
29Sat2:052.92:523.28:250.19:220.35:178:10First Quarter29Sat
30Sun3:092.93:563.49:260.110:370.25:168:11Waxing Gibbous30Sun
31Mon4:162.84:593.610:260.011:390.05:168:11Waxing Gibbous31Mon
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