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 30m 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 - Jan 2048

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:193.07:422.612:41-0.11:58-0.17:114:27Full Moon1Wed
2Thu7:533.08:192.61:19-0.22:27-0.17:114:28Full Moon2Thu
3Fri8:293.08:582.71:57-0.22:51-0.17:114:29Waning Gibbous3Fri
4Sat9:073.09:402.72:36-0.13:16-0.17:114:30Waning Gibbous4Sat
5Sun9:492.810:252.73:170.03:47-0.17:114:31Waning Gibbous5Sun
6Mon10:352.711:152.84:030.14:26-0.17:114:32Waning Gibbous6Mon
7Tue11:262.64:570.25:14-0.17:114:33Third Quarter7Tue
8Wed12:082.812:222.46:050.26:09-0.17:114:34Third Quarter8Wed
9Thu1:062.91:242.37:320.27:11-0.17:114:35Third Quarter9Thu
10Fri2:103.02:342.39:040.18:23-0.17:114:36Waning Crescent10Fri
11Sat3:203.13:472.410:14-0.19:42-0.27:104:37Waning Crescent11Sat
12Sun4:273.34:512.611:12-0.310:50-0.47:104:38Waning Crescent12Sun
13Mon5:253.55:482.912:04-0.57:104:39Waning Crescent13Mon
14Tue6:193.76:403.112:54-0.67:094:40New Moon14Tue
15Wed7:093.77:303.212:44-0.71:39-0.77:094:41New Moon15Wed
16Thu7:573.68:183.21:35-0.72:21-0.77:084:43New Moon16Thu
17Fri8:433.59:053.22:22-0.62:58-0.67:084:44Waxing Crescent17Fri
18Sat9:273.29:513.13:05-0.43:32-0.57:074:45Waxing Crescent18Sat
19Sun10:112.910:382.93:48-0.24:03-0.37:074:46Waxing Crescent19Sun
20Mon10:562.611:252.74:340.04:33-0.17:064:47Waxing Crescent20Mon
21Tue11:422.35:310.35:080.17:064:48First Quarter21Tue
22Wed12:132.512:312.06:470.55:520.27:054:50First Quarter22Wed
23Thu1:032.31:241.98:020.56:430.37:044:51First Quarter23Thu
24Fri2:022.22:321.89:100.57:460.47:044:52First Quarter24Fri
25Sat3:182.23:451.810:090.59:030.47:034:53Waxing Gibbous25Sat
26Sun4:222.34:411.910:590.310:120.37:024:54Waxing Gibbous26Sun
27Mon5:102.55:252.111:430.211:040.17:014:56Waxing Gibbous27Mon
28Tue5:482.76:042.312:230.07:004:57Waxing Gibbous28Tue
29Wed6:232.86:412.512:59-0.16:594:58Full Moon29Wed
30Thu6:563.07:182.712:30-0.21:32-0.36:594:59Full Moon30Thu
31Fri7:313.17:562.91:09-0.41:59-0.46:585:01Full Moon31Fri
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