Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 6:38 pm (0.7 ft)
Next high tide : in 20m at 12:46 pm (2.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:20 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:323.210:073.02:57-0.33:37-0.37:114:28Waning Gibbous1Sat
2Sun10:213.011:003.03:46-0.24:18-0.37:114:28Waning Gibbous2Sun
3Mon11:142.811:563.04:420.05:07-0.27:114:29Third Quarter3Mon
4Tue12:122.75:540.16:05-0.27:114:30Third Quarter4Tue
5Wed12:553.01:132.57:290.17:11-0.17:114:31Third Quarter5Wed
6Thu1:593.12:212.48:530.18:28-0.17:114:32Third Quarter6Thu
7Fri3:093.13:332.510:01-0.19:44-0.27:114:33Waning Crescent7Fri
8Sat4:153.34:382.610:59-0.210:46-0.37:114:34Waning Crescent8Sat
9Sun5:133.45:342.811:51-0.311:40-0.47:114:35Waning Crescent9Sun
10Mon6:053.56:252.912:39-0.57:114:36New Moon10Mon
11Tue6:543.57:133.012:30-0.51:23-0.57:104:37New Moon11Tue
12Wed7:393.57:583.01:16-0.52:03-0.57:104:38New Moon12Wed
13Thu8:223.38:423.01:57-0.42:37-0.57:104:39New Moon13Thu
14Fri9:023.19:242.92:34-0.33:08-0.47:094:40Waxing Crescent14Fri
15Sat9:412.910:052.73:07-0.13:34-0.27:094:42Waxing Crescent15Sat
16Sun10:212.610:462.63:410.04:01-0.17:094:43Waxing Crescent16Sun
17Mon11:012.411:282.44:200.24:350.07:084:44Waxing Crescent17Mon
18Tue11:432.25:080.45:150.27:084:45First Quarter18Tue
19Wed12:102.312:292.06:160.56:030.37:074:46First Quarter19Wed
20Thu12:562.31:211.98:000.66:570.37:064:47First Quarter20Thu
21Fri1:512.22:251.89:150.57:590.37:064:49First Quarter21Fri
22Sat3:002.33:361.910:140.49:090.37:054:50Waxing Gibbous22Sat
23Sun4:072.54:342.111:020.210:120.17:044:51Waxing Gibbous23Sun
24Mon4:572.75:202.311:460.011:04-0.17:044:52Waxing Gibbous24Mon
25Tue5:402.96:032.512:26-0.27:034:53Waxing Gibbous25Tue
26Wed6:223.16:462.81:02-0.37:024:55Full Moon26Wed
27Thu7:033.37:293.012:37-0.51:36-0.57:014:56Full Moon27Thu
28Fri7:463.48:133.21:22-0.62:08-0.67:004:57Full Moon28Fri
29Sat8:303.48:593.32:06-0.72:40-0.77:004:58Waning Gibbous29Sat
30Sun9:163.39:473.32:51-0.63:15-0.66:595:00Waning Gibbous30Sun
31Mon10:043.110:393.33:39-0.53:54-0.66:585:01Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

Show All
What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 3:42 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 62% 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 Third Quarter (62% 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