Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 3h 02m at 12:51 am (0.5 ft)
Next high tide (tomorrow) : 6:39 am (2.3 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 2048

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:532.23:132.58:280.910:260.86:436:27Third Quarter1Thu
2Fri4:002.44:222.69:590.811:090.76:446:25Waning Crescent2Fri
3Sat4:552.65:132.811:000.611:440.56:466:24Waning Crescent3Sat
4Sun5:392.95:542.911:480.46:476:22Waning Crescent4Sun
5Mon6:193.26:343.112:150.312:310.26:486:20Waning Crescent5Mon
6Tue6:583.57:143.212:430.11:130.06:496:19New Moon6Tue
7Wed7:383.87:563.31:13-0.11:56-0.16:506:17New Moon7Wed
8Thu8:213.98:403.31:47-0.22:38-0.26:516:15New Moon8Thu
9Fri9:054.09:273.32:25-0.33:21-0.26:526:14Waxing Crescent9Fri
10Sat9:534.010:163.23:07-0.24:07-0.16:536:12Waxing Crescent10Sat
11Sun10:443.811:093.13:51-0.14:590.16:546:11Waxing Crescent11Sun
12Mon11:413.64:400.06:090.36:556:09Waxing Crescent12Mon
13Tue12:082.912:433.45:390.27:350.46:566:07First Quarter13Tue
14Wed1:122.91:493.37:060.48:470.46:576:06First Quarter14Wed
15Thu2:202.92:583.18:550.49:490.36:586:04First Quarter15Thu
16Fri3:303.04:063.110:120.310:430.27:006:03Waxing Gibbous16Fri
17Sat4:363.25:073.111:140.211:290.17:016:01Waxing Gibbous17Sat
18Sun5:333.45:593.112:060.17:026:00Waxing Gibbous18Sun
19Mon6:233.66:453.212:090.012:530.17:035:58Waxing Gibbous19Mon
20Tue7:073.77:283.212:450.01:360.07:045:57Full Moon20Tue
21Wed7:483.78:093.11:170.02:150.07:055:55Full Moon21Wed
22Thu8:273.68:483.01:460.02:500.17:065:54Full Moon22Thu
23Fri9:043.59:272.92:160.03:220.27:075:53Full Moon23Fri
24Sat9:403.310:062.82:480.13:510.37:095:51Waning Gibbous24Sat
25Sun10:153.110:462.63:230.34:220.47:105:50Waning Gibbous25Sun
26Mon10:532.911:302.44:010.45:000.67:115:48Waning Gibbous26Mon
27Tue11:352.74:430.65:530.77:125:47Waning Gibbous27Tue
28Wed12:192.312:242.65:310.77:320.87:135:46Third Quarter28Wed
29Thu1:122.31:172.56:310.88:400.87:145:44Third Quarter29Thu
30Fri2:072.32:132.57:470.99:300.77:165:43Third Quarter30Fri
31Sat3:052.43:132.59:170.810:120.67:175:42Third Quarter31Sat
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 3:45 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 spring phase. Tonight's moon is 90% 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 near their weekly maximum.

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 Waxing Gibbous (90% illuminated). This places Block Island, RI in a spring tide cycle, so tidal ranges are near their weekly maximum 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