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 : in 1h 41m at 11:19 am (0.5 ft)
Next high tide : 6:23 pm (3.1 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 2008

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:273.69:423.02:440.03:310.26:436:27Waxing Crescent1Wed
2Thu10:033.410:192.83:110.24:020.36:446:26Waxing Crescent2Thu
3Fri10:393.110:582.63:420.34:340.56:456:24Waxing Crescent3Fri
4Sat11:182.911:412.44:170.55:150.76:466:22Waxing Crescent4Sat
5Sun12:032.74:570.76:120.96:476:21First Quarter5Sun
6Mon12:302.212:572.65:460.98:031.06:486:19First Quarter6Mon
7Tue1:262.11:582.56:491.09:180.96:496:18First Quarter7Tue
8Wed2:282.13:062.58:121.010:130.86:506:16First Quarter8Wed
9Thu3:372.34:142.69:560.910:560.76:526:14Waxing Gibbous9Thu
10Fri4:392.55:062.810:580.711:310.56:536:13Waxing Gibbous10Fri
11Sat5:262.85:493.011:460.46:546:11Waxing Gibbous11Sat
12Sun6:083.26:303.112:010.212:300.26:556:09Waxing Gibbous12Sun
13Mon6:493.67:123.312:310.01:130.06:566:08Full Moon13Mon
14Tue7:303.87:563.31:04-0.21:56-0.26:576:06Full Moon14Tue
15Wed8:144.08:413.31:41-0.32:41-0.36:586:05Full Moon15Wed
16Thu9:004.19:283.32:21-0.33:26-0.26:596:03Waning Gibbous16Thu
17Fri9:484.010:193.13:04-0.34:14-0.17:006:02Waning Gibbous17Fri
18Sat10:413.811:133.03:50-0.25:110.17:016:00Waning Gibbous18Sat
19Sun11:393.64:400.06:300.37:035:59Waning Gibbous19Sun
20Mon12:142.912:433.45:410.27:510.47:045:57Third Quarter20Mon
21Tue1:192.81:513.27:110.48:590.47:055:56Third Quarter21Tue
22Wed2:272.83:023.08:540.49:590.37:065:54Third Quarter22Wed
23Thu3:362.94:103.010:100.410:500.37:075:53Waning Crescent23Thu
24Fri4:413.15:093.011:110.311:340.27:085:52Waning Crescent24Fri
25Sat5:363.35:593.012:030.27:095:50Waning Crescent25Sat
26Sun6:233.56:423.012:110.112:470.17:115:49Waning Crescent26Sun
27Mon7:063.67:223.012:440.11:280.17:125:47New Moon27Mon
28Tue7:453.68:012.91:120.02:040.17:135:46New Moon28Tue
29Wed8:223.58:382.91:380.12:370.17:145:45New Moon29Wed
30Thu8:573.49:142.82:070.13:080.27:155:44New Moon30Thu
31Fri9:323.29:512.62:380.23:380.37:165:42Waxing Crescent31Fri
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 2:51 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 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