Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 29m at 11:53 am (-0.1 ft)
Next high tide : 6:42 pm (3.9 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:102.73:422.310:110.29:29-0.17:114:28Waxing Gibbous1Fri
2Sat4:103.04:402.511:02-0.110:24-0.37:114:28Waxing Gibbous2Sat
3Sun5:043.35:332.811:50-0.311:16-0.57:114:29Waxing Gibbous3Sun
4Mon5:553.66:233.012:37-0.57:114:30Full Moon4Mon
5Tue6:453.87:143.212:08-0.71:23-0.77:114:31Full Moon5Tue
6Wed7:353.98:043.31:00-0.82:09-0.87:114:32Full Moon6Wed
7Thu8:253.98:553.41:51-0.82:54-0.87:114:33Waning Gibbous7Thu
8Fri9:163.79:483.32:43-0.83:40-0.77:114:34Waning Gibbous8Fri
9Sat10:083.410:433.23:36-0.64:30-0.57:114:35Waning Gibbous9Sat
10Sun11:033.111:413.14:39-0.45:27-0.47:104:36Third Quarter10Sun
11Mon12:012.86:00-0.16:30-0.27:104:37Third Quarter11Mon
12Tue12:413.01:012.57:210.07:33-0.17:104:38Third Quarter12Tue
13Wed1:452.92:052.38:340.18:360.07:104:39Third Quarter13Wed
14Thu2:522.83:142.29:400.19:360.17:094:40Waning Crescent14Thu
15Fri3:572.84:172.210:360.110:280.17:094:42Waning Crescent15Fri
16Sat4:522.95:102.311:240.111:140.07:084:43Waning Crescent16Sat
17Sun5:402.95:562.412:070.07:084:44Waning Crescent17Sun
18Mon6:233.06:382.512:46-0.17:074:45New Moon18Mon
19Tue7:023.07:172.612:30-0.11:21-0.27:074:46New Moon19Tue
20Wed7:383.07:532.61:04-0.11:53-0.27:064:47New Moon20Wed
21Thu8:112.98:272.61:35-0.22:21-0.27:054:49New Moon21Thu
22Fri8:432.99:002.62:06-0.12:47-0.27:054:50Waxing Crescent22Fri
23Sat9:152.79:352.52:38-0.13:12-0.17:044:51Waxing Crescent23Sat
24Sun9:492.610:112.53:130.03:41-0.17:034:52Waxing Crescent24Sun
25Mon10:282.510:522.43:510.24:160.07:034:53Waxing Crescent25Mon
26Tue11:112.311:372.44:350.34:570.17:024:55First Quarter26Tue
27Wed12:002.25:280.45:450.17:014:56First Quarter27Wed
28Thu12:282.512:552.16:330.46:400.17:004:57First Quarter28Thu
29Fri1:242.51:572.18:040.47:420.06:594:58First Quarter29Fri
30Sat2:292.73:072.29:400.28:50-0.16:585:00Waxing Gibbous30Sat
31Sun3:392.94:152.510:40-0.110:00-0.36:575:01Waxing Gibbous31Sun
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 3:17 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 5% 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 Waning Crescent (5% 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