Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 1:32 am (-0.1 ft)
Next high tide : in 5h 47m at 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 - Mar 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:223.14:552.911:10-0.310:56-0.56:185:38Waxing Gibbous1Tue
2Wed5:213.45:503.211:59-0.611:54-0.76:175:39Waxing Gibbous2Wed
3Thu6:143.66:413.512:44-0.86:155:40Full Moon3Thu
4Fri7:053.77:303.712:49-0.91:28-0.96:135:41Full Moon4Fri
5Sat7:533.78:193.81:41-1.02:09-0.96:125:42Full Moon5Sat
6Sun8:413.69:073.72:30-0.92:48-0.86:105:43Waning Gibbous6Sun
7Mon9:293.39:563.53:18-0.73:25-0.66:095:44Waning Gibbous7Mon
8Tue10:183.010:473.34:07-0.54:02-0.46:075:45Waning Gibbous8Tue
9Wed11:092.711:423.05:05-0.24:42-0.16:055:47Waning Gibbous9Wed
10Thu12:042.46:150.15:320.26:045:48Third Quarter10Thu
11Fri12:402.71:032.27:270.36:490.46:025:49Third Quarter11Fri
12Sat1:452.52:112.18:350.48:310.56:005:50Third Quarter12Sat
13Sun3:572.44:232.110:360.410:410.56:596:51Third Quarter13Sun
14Mon5:032.45:242.211:260.411:340.46:576:52Waning Crescent14Mon
15Tue5:552.56:112.412:090.36:556:53Waning Crescent15Tue
16Wed6:382.66:512.512:180.212:460.16:546:54Waning Crescent16Wed
17Thu7:142.77:262.712:580.11:200.06:526:55Waning Crescent17Thu
18Fri7:472.87:592.91:35-0.11:51-0.16:506:57New Moon18Fri
19Sat8:182.98:303.02:10-0.22:18-0.26:496:58New Moon19Sat
20Sun8:492.99:013.12:42-0.22:42-0.36:476:59New Moon20Sun
21Mon9:222.89:353.13:12-0.23:08-0.36:457:00New Moon21Mon
22Tue9:582.810:123.13:41-0.13:38-0.26:447:01Waxing Crescent22Tue
23Wed10:382.710:533.04:13-0.14:13-0.26:427:02Waxing Crescent23Wed
24Thu11:232.611:393.04:510.14:53-0.16:407:03Waxing Crescent24Thu
25Fri12:132.55:370.25:410.06:397:04First Quarter25Fri
26Sat12:322.91:102.46:360.36:390.16:377:05First Quarter26Sat
27Sun1:312.82:132.48:000.37:480.26:357:06First Quarter27Sun
28Mon2:372.83:222.69:450.29:120.16:347:07First Quarter28Mon
29Tue3:512.94:342.810:520.010:44-0.16:327:08Waxing Gibbous29Tue
30Wed5:023.15:373.111:45-0.211:52-0.36:307:10Waxing Gibbous30Wed
31Thu6:033.36:323.512:33-0.46:297:11Waxing Gibbous31Thu
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 10:07 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