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 2h 07m 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 - Jan 2060

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:333.05:512.312:140.07:114:27Waning Crescent1Thu
2Fri6:153.26:342.512:56-0.27:114:28New Moon2Fri
3Sat6:593.37:182.612:14-0.21:36-0.37:114:29New Moon3Sat
4Sun7:433.48:042.71:00-0.42:15-0.37:114:30New Moon4Sun
5Mon8:293.48:512.81:46-0.42:53-0.47:114:31Waxing Crescent5Mon
6Tue9:153.49:412.92:33-0.43:31-0.47:114:32Waxing Crescent6Tue
7Wed10:053.210:332.93:23-0.34:13-0.37:114:33Waxing Crescent7Wed
8Thu10:573.011:302.94:19-0.15:01-0.37:114:34Waxing Crescent8Thu
9Fri11:532.85:310.05:53-0.27:114:35First Quarter9Fri
10Sat12:283.012:512.57:060.16:50-0.27:104:36First Quarter10Sat
11Sun1:293.01:552.48:300.17:51-0.17:104:37First Quarter11Sun
12Mon2:363.03:052.39:410.18:58-0.17:104:38Waxing Gibbous12Mon
13Tue3:443.14:122.310:420.010:04-0.17:104:39Waxing Gibbous13Tue
14Wed4:463.25:102.411:35-0.111:01-0.27:094:40Waxing Gibbous14Wed
15Thu5:413.26:022.612:25-0.27:094:41Waxing Gibbous15Thu
16Fri6:303.26:502.71:10-0.37:084:43Full Moon16Fri
17Sat7:163.27:352.712:40-0.31:50-0.37:084:44Full Moon17Sat
18Sun7:583.28:182.71:23-0.32:26-0.37:074:45Full Moon18Sun
19Mon8:373.08:592.72:00-0.32:59-0.27:074:46Waning Gibbous19Mon
20Tue9:132.99:402.62:35-0.23:27-0.27:064:47Waning Gibbous20Tue
21Wed9:482.710:192.53:090.03:51-0.17:064:48Waning Gibbous21Wed
22Thu10:232.510:592.43:470.14:170.07:054:50Waning Gibbous22Thu
23Fri11:002.311:392.34:290.34:490.27:044:51Waning Gibbous23Fri
24Sat11:412.15:210.45:280.37:034:52Third Quarter24Sat
25Sun12:202.312:261.96:240.56:130.37:034:53Third Quarter25Sun
26Mon1:062.31:181.87:460.57:040.47:024:55Third Quarter26Mon
27Tue2:012.32:221.79:130.58:040.47:014:56Third Quarter27Tue
28Wed3:082.43:351.810:160.39:120.37:004:57Waning Crescent28Wed
29Thu4:142.64:372.011:080.210:170.16:594:58Waning Crescent29Thu
30Fri5:082.95:272.311:53-0.111:13-0.26:585:00Waning Crescent30Fri
31Sat5:563.16:142.512:36-0.36:585:01New Moon31Sat
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