Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 45m at 5:39 pm (0.6 ft)
Next high tide (tomorrow) : 12:12 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 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:303.45:542.612:17-0.37:114:27Waxing Gibbous1Mon
2Tue6:223.46:442.81:04-0.37:114:28Full Moon2Tue
3Wed7:103.47:312.812:32-0.31:48-0.37:114:29Full Moon3Wed
4Thu7:553.38:172.81:18-0.32:27-0.37:114:30Full Moon4Thu
5Fri8:373.29:002.82:00-0.33:03-0.27:114:31Waning Gibbous5Fri
6Sat9:173.09:442.72:37-0.23:35-0.27:114:32Waning Gibbous6Sat
7Sun9:552.810:272.63:140.04:040.07:114:33Waning Gibbous7Sun
8Mon10:332.511:102.53:530.24:310.17:114:34Waning Gibbous8Mon
9Tue11:112.311:532.44:370.35:030.27:114:35Third Quarter9Tue
10Wed11:522.15:320.55:400.37:114:36Third Quarter10Wed
11Thu12:362.312:371.96:420.66:250.47:104:37Third Quarter11Thu
12Fri1:222.31:291.88:060.67:150.47:104:38Third Quarter12Fri
13Sat2:172.32:331.79:220.58:140.47:104:39Waning Crescent13Sat
14Sun3:222.43:451.810:210.49:190.37:094:40Waning Crescent14Sun
15Mon4:222.64:422.011:110.210:200.17:094:41Waning Crescent15Mon
16Tue5:122.85:302.211:570.011:12-0.17:094:43Waning Crescent16Tue
17Wed5:573.16:142.412:39-0.17:084:44New Moon17Wed
18Thu6:413.36:592.612:01-0.31:19-0.37:084:45New Moon18Thu
19Fri7:253.47:442.812:49-0.41:56-0.57:074:46New Moon19Fri
20Sat8:093.48:303.01:36-0.52:31-0.57:064:47New Moon20Sat
21Sun8:543.49:183.12:23-0.53:05-0.67:064:48Waxing Crescent21Sun
22Mon9:403.210:073.23:10-0.53:41-0.67:054:50Waxing Crescent22Mon
23Tue10:293.011:003.24:03-0.34:21-0.57:044:51Waxing Crescent23Tue
24Wed11:232.711:563.15:07-0.15:07-0.47:044:52First Quarter24Wed
25Thu12:202.46:340.06:00-0.27:034:53First Quarter25Thu
26Fri12:553.01:222.28:000.17:02-0.17:024:54First Quarter26Fri
27Sat2:022.92:332.19:160.18:200.07:014:56Waxing Gibbous27Sat
28Sun3:172.93:462.210:210.19:450.07:014:57Waxing Gibbous28Sun
29Mon4:272.94:502.311:170.010:51-0.17:004:58Waxing Gibbous29Mon
30Tue5:253.05:432.512:07-0.16:594:59Waxing Gibbous30Tue
31Wed6:143.16:312.712:51-0.26:585:01Full Moon31Wed
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 8:55 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