Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

61°
H 65°
L 57°
NE
11mph
Low tide
7:10 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 52m at 7:10 am (1.0 ft)
Next high tide : 2:36 pm (2.5 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
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 - Mar 1860

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:532.51:342.07:500.57:090.26:235:41First Quarter1Thu
2Fri2:042.62:492.19:320.38:300.16:225:42Waxing Gibbous2Fri
3Sat3:232.84:022.410:300.19:56-0.16:205:43Waxing Gibbous3Sat
4Sun4:313.05:012.811:17-0.211:03-0.46:195:45Waxing Gibbous4Sun
5Mon5:273.35:543.212:01-0.56:175:46Waxing Gibbous5Mon
6Tue6:183.56:433.512:01-0.712:42-0.76:155:47Full Moon6Tue
7Wed7:063.67:323.812:55-0.91:22-0.96:145:48Full Moon7Wed
8Thu7:543.58:193.91:46-0.92:00-0.96:125:49Full Moon8Thu
9Fri8:413.39:063.82:35-0.92:36-0.86:115:50Waning Gibbous9Fri
10Sat9:283.19:553.63:23-0.73:13-0.66:095:51Waning Gibbous10Sat
11Sun10:172.810:473.34:15-0.43:51-0.36:075:52Waning Gibbous11Sun
12Mon11:102.511:443.05:16-0.14:340.06:065:53Third Quarter12Mon
13Tue12:072.26:300.25:290.26:045:55Third Quarter13Tue
14Wed12:472.71:102.17:440.47:060.46:025:56Third Quarter14Wed
15Thu1:592.42:232.08:530.58:510.56:015:57Third Quarter15Thu
16Fri3:152.43:372.19:520.59:590.45:595:58Waning Crescent16Fri
17Sat4:182.44:352.210:400.410:490.35:575:59Waning Crescent17Sat
18Sun5:062.55:212.411:190.211:320.25:566:00Waning Crescent18Sun
19Mon5:462.66:002.611:520.15:546:01Waning Crescent19Mon
20Tue6:212.76:342.812:100.112:220.05:526:02New Moon20Tue
21Wed6:532.77:053.012:46-0.112:49-0.15:516:03New Moon21Wed
22Thu7:232.87:353.11:20-0.11:13-0.25:496:04New Moon22Thu
23Fri7:542.78:043.11:52-0.21:37-0.25:476:05New Moon23Fri
24Sat8:262.78:363.12:20-0.12:04-0.25:466:07Waxing Crescent24Sat
25Sun9:002.69:113.02:480.02:35-0.15:446:08Waxing Crescent25Sun
26Mon9:392.49:512.93:190.13:100.05:426:09Waxing Crescent26Mon
27Tue10:232.310:382.83:550.23:500.15:406:10Waxing Crescent27Tue
28Wed11:142.211:322.84:420.34:390.25:396:11First Quarter28Wed
29Thu12:122.25:460.45:390.35:376:12First Quarter29Thu
30Fri12:342.71:172.37:280.46:530.35:356:13First Quarter30Fri
31Sat1:422.72:292.48:570.38:220.25:346:14First Quarter31Sat
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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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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