Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 5h 01m at 12:07 am (0.6 ft)
Next high tide (tomorrow) : 5:53 am (2.3 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:14 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 2046

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:493.310:132.72:590.04:130.06:524:18Waxing Crescent1Sat
2Sun10:403.011:072.63:460.25:050.26:534:18Waxing Crescent2Sun
3Mon11:322.74:420.45:590.36:544:17First Quarter3Mon
4Tue12:032.512:242.56:080.66:500.46:554:17First Quarter4Tue
5Wed12:582.41:172.37:270.77:340.56:564:17First Quarter5Wed
6Thu1:542.42:122.28:320.78:160.56:574:17First Quarter6Thu
7Fri2:512.53:122.19:300.68:570.46:584:17Waxing Gibbous7Fri
8Sat3:442.64:062.110:190.59:380.46:594:17Waxing Gibbous8Sat
9Sun4:292.74:512.211:040.310:190.37:004:17Waxing Gibbous9Sun
10Mon5:082.95:312.311:470.210:580.17:004:17Waxing Gibbous10Mon
11Tue5:453.06:082.412:280.17:014:17Full Moon11Tue
12Wed6:223.16:472.51:070.07:024:17Full Moon12Wed
13Thu7:003.27:262.612:19-0.11:450.07:034:17Full Moon13Thu
14Fri7:403.38:082.71:01-0.22:19-0.17:044:18Full Moon14Fri
15Sat8:223.38:522.71:43-0.22:52-0.17:044:18Waning Gibbous15Sat
16Sun9:063.29:392.72:26-0.13:26-0.17:054:18Waning Gibbous16Sun
17Mon9:523.110:302.83:12-0.14:04-0.17:064:18Waning Gibbous17Mon
18Tue10:433.011:242.84:030.04:490.07:064:19Waning Gibbous18Tue
19Wed11:372.85:050.25:410.07:074:19Third Quarter19Wed
20Thu12:222.912:352.66:250.26:390.07:074:20Third Quarter20Thu
21Fri1:213.01:372.57:570.27:40-0.17:084:20Third Quarter21Fri
22Sat2:253.12:452.49:160.18:46-0.17:084:21Waning Crescent22Sat
23Sun3:313.33:552.510:210.09:51-0.27:094:21Waning Crescent23Sun
24Mon4:333.44:562.611:17-0.210:50-0.37:094:22Waning Crescent24Mon
25Tue5:293.65:512.712:09-0.37:104:22Waning Crescent25Tue
26Wed6:213.66:422.812:58-0.47:104:23New Moon26Wed
27Thu7:103.67:302.912:36-0.41:43-0.47:104:24New Moon27Thu
28Fri7:573.58:172.91:24-0.42:25-0.47:104:24New Moon28Fri
29Sat8:423.39:022.82:08-0.33:03-0.37:114:25Waxing Crescent29Sat
30Sun9:253.19:472.72:47-0.23:37-0.27:114:26Waxing Crescent30Sun
31Mon10:062.910:312.63:250.04:09-0.17:114:27Waxing Crescent31Mon
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 3:00 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 84% 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 (84% 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