Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 5:39 pm (0.6 ft)
Next high tide : in 4h 36m at 11:59 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Nov 2059

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:552.86:122.712:010.57:175:42Waning Crescent1Sat
2Sun5:323.05:452.712:150.311:410.26:184:40Waning Crescent2Sun
3Mon6:043.26:162.812:170.26:204:39New Moon3Mon
4Tue6:353.36:482.812:050.112:530.16:214:38New Moon4Tue
5Wed7:073.47:222.812:310.11:270.16:224:37New Moon5Wed
6Thu7:403.47:582.81:010.12:000.16:234:36New Moon6Thu
7Fri8:173.48:382.71:340.12:330.26:244:35Waxing Crescent7Fri
8Sat8:573.39:212.62:100.13:090.36:264:34Waxing Crescent8Sat
9Sun9:423.210:102.52:500.23:500.46:274:32Waxing Crescent9Sun
10Mon10:343.111:062.53:340.34:440.56:284:31Waxing Crescent10Mon
11Tue11:323.04:280.46:020.56:294:30First Quarter11Tue
12Wed12:072.512:352.95:370.57:260.46:304:30First Quarter12Wed
13Thu1:122.61:402.97:080.58:290.26:324:29First Quarter13Thu
14Fri2:192.82:483.08:490.49:220.16:334:28Waxing Gibbous14Fri
15Sat3:253.13:523.110:000.110:08-0.16:344:27Waxing Gibbous15Sat
16Sun4:233.54:493.210:57-0.110:51-0.36:354:26Waxing Gibbous16Sun
17Mon5:153.85:403.211:49-0.311:33-0.46:364:25Waxing Gibbous17Mon
18Tue6:044.06:303.312:40-0.46:374:24Full Moon18Tue
19Wed6:524.17:183.212:15-0.51:29-0.56:394:24Full Moon19Wed
20Thu7:394.08:073.112:57-0.42:15-0.46:404:23Full Moon20Thu
21Fri8:263.88:553.01:39-0.33:01-0.26:414:22Waning Gibbous21Fri
22Sat9:143.59:442.82:21-0.23:480.06:424:22Waning Gibbous22Sat
23Sun10:043.210:372.63:030.14:420.26:434:21Waning Gibbous23Sun
24Mon10:572.911:342.43:480.35:480.46:444:21Waning Gibbous24Mon
25Tue11:542.64:430.56:510.56:454:20Third Quarter25Tue
26Wed12:332.312:522.56:060.77:460.66:474:20Third Quarter26Wed
27Thu1:342.31:502.37:410.88:350.56:484:19Third Quarter27Thu
28Fri2:342.42:512.38:480.79:170.56:494:19Third Quarter28Fri
29Sat3:302.53:452.39:440.69:530.46:504:18Waning Crescent29Sat
30Sun4:162.74:292.310:310.410:240.36:514:18Waning Crescent30Sun
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 2:49 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 72% 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 Waning Gibbous (72% 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