Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, July 11, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 2h 58m at 12:36 am (0.0 ft)
Next high tide (tomorrow) : 6:15 am (2.9 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:23 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Mar 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:052.97:182.912:53-0.21:18-0.36:195:37New Moon1Sun
2Mon7:393.07:543.01:27-0.31:44-0.46:185:38New Moon2Mon
3Tue8:143.08:313.12:00-0.32:10-0.46:165:39New Moon3Tue
4Wed8:533.09:113.12:32-0.32:40-0.46:155:40Waxing Crescent4Wed
5Thu9:352.99:553.13:08-0.33:15-0.46:135:41Waxing Crescent5Thu
6Fri10:212.710:433.13:50-0.13:56-0.36:115:42Waxing Crescent6Fri
7Sat11:142.611:383.04:390.04:44-0.26:105:44First Quarter7Sat
8Sun1:122.56:440.16:43-0.17:086:45First Quarter8Sun
9Mon1:382.92:152.48:260.27:520.07:076:46First Quarter9Mon
10Tue2:452.93:262.59:580.19:200.07:056:47First Quarter10Tue
11Wed4:012.94:402.711:03-0.110:53-0.27:036:48Waxing Gibbous11Wed
12Thu5:123.15:433.011:58-0.311:58-0.47:026:49Waxing Gibbous12Thu
13Fri6:123.36:383.212:46-0.57:006:50Waxing Gibbous13Fri
14Sat7:043.47:283.512:53-0.51:31-0.66:586:51Full Moon14Sat
15Sun7:523.58:153.61:44-0.72:12-0.76:576:52Full Moon15Sun
16Mon8:373.49:003.62:31-0.72:50-0.76:556:54Full Moon16Mon
17Tue9:203.39:443.53:13-0.63:22-0.66:536:55Full Moon17Tue
18Wed10:033.110:273.33:52-0.53:50-0.46:526:56Waning Gibbous18Wed
19Thu10:452.811:093.14:28-0.34:17-0.26:506:57Waning Gibbous19Thu
20Fri11:282.611:532.85:040.04:490.06:486:58Waning Gibbous20Fri
21Sat12:132.35:440.25:270.36:476:59Waning Gibbous21Sat
22Sun12:402.61:022.16:390.46:140.46:457:00Third Quarter22Sun
23Mon1:312.41:552.08:080.67:130.66:437:01Third Quarter23Mon
24Tue2:302.22:592.09:250.68:380.66:427:02Third Quarter24Tue
25Wed3:462.24:162.010:270.510:280.66:407:03Third Quarter25Wed
26Thu4:552.35:152.211:170.411:250.46:387:04Waning Crescent26Thu
27Fri5:442.55:582.411:580.26:377:06Waning Crescent27Fri
28Sat6:222.66:352.712:110.212:340.16:357:07Waning Crescent28Sat
29Sun6:582.87:113.012:530.01:07-0.16:337:08Waning Crescent29Sun
30Mon7:333.07:473.21:32-0.21:36-0.36:327:09New Moon30Mon
31Tue8:113.18:263.42:10-0.32:06-0.46:307:10New Moon31Tue
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 3:25 am — 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 11% 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 (11% 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