Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

62°
H -°
L 56°
NE
25mph
High tide
6:20 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 12:36 am (0.4 ft)
Next high tide : in 1h 49m at 6:20 pm (3.0 ft)
Sunset today : 6:42 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
Coast Guard Station, Point Judith Rhode Island,

USCG Station Point Judith, RI
Beach in East Hampton, NY -- Nicole Mayone, CC BY-SA 2.0 , via Wikimedia Commons

East Hampton Harbormaster

Block Island, RI Tides - May 1852

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:023.35:333.711:17-0.311:54-0.44:476:47Waxing Gibbous1Sat
2Sun5:563.46:234.012:00-0.54:456:48Full Moon2Sun
3Mon6:473.57:124.212:48-0.612:44-0.64:446:49Full Moon3Mon
4Tue7:373.48:014.21:40-0.71:27-0.64:436:50Full Moon4Tue
5Wed8:273.38:514.12:30-0.62:11-0.54:426:51Waning Gibbous5Wed
6Thu9:173.29:413.83:19-0.52:54-0.34:406:52Waning Gibbous6Thu
7Fri10:093.010:353.54:12-0.23:390.04:396:53Waning Gibbous7Fri
8Sat11:042.811:323.25:120.04:320.34:386:54Waning Gibbous8Sat
9Sun12:032.66:180.35:520.54:376:55Third Quarter9Sun
10Mon12:322.91:042.57:200.47:270.64:366:56Third Quarter10Mon
11Tue1:342.62:072.58:160.58:380.74:356:57Third Quarter11Tue
12Wed2:382.53:112.59:070.59:380.64:346:58Third Quarter12Wed
13Thu3:382.54:072.79:500.510:270.64:336:59Waning Crescent13Thu
14Fri4:292.54:522.810:270.411:110.44:327:00Waning Crescent14Fri
15Sat5:122.55:303.010:590.311:510.34:317:01Waning Crescent15Sat
16Sun5:492.66:043.111:280.24:307:02Waning Crescent16Sun
17Mon6:252.76:363.212:310.211:58 AM0.14:297:03New Moon17Mon
18Tue6:592.77:083.31:090.112:300.14:287:04New Moon18Tue
19Wed7:352.77:433.31:450.11:040.14:277:05New Moon19Wed
20Thu8:122.78:193.32:180.11:410.14:267:06New Moon20Thu
21Fri8:512.78:593.32:490.22:180.14:257:07Waxing Crescent21Fri
22Sat9:342.69:433.23:210.22:590.24:257:08Waxing Crescent22Sat
23Sun10:212.610:323.13:590.33:440.34:247:09Waxing Crescent23Sun
24Mon11:142.611:253.04:470.44:370.44:237:10Waxing Crescent24Mon
25Tue12:112.75:490.45:410.54:237:10First Quarter25Tue
26Wed12:233.01:102.86:570.36:570.54:227:11First Quarter26Wed
27Thu1:242.92:123.08:000.28:240.44:217:12First Quarter27Thu
28Fri2:292.93:173.38:590.19:440.24:217:13Waxing Gibbous28Fri
29Sat3:373.04:173.69:52-0.110:47-0.14:207:14Waxing Gibbous29Sat
30Sun4:393.15:123.910:42-0.211:43-0.24:207:15Waxing Gibbous30Sun
31Mon5:353.26:044.111:29-0.34:197:15Full Moon31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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Common Questions About Block Island, RI Tides

Collapse All
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 90% 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 Waxing Gibbous (90% 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

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