Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

57°
H 67°
L 60°
NE
10mph
High tide
11:05 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 5:02 pm (0.5 ft)
Next high tide : in 5h 02m at 11:05 am (3.3 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:27 am
Moon phase : Waxing Crescent (21% 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 - Aug 1866

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:413.411:033.24:010.04:310.34:457:07Waning Gibbous1Wed
2Thu11:343.411:583.04:470.05:380.44:467:06Third Quarter2Thu
3Fri12:313.45:410.17:090.54:477:05Third Quarter3Fri
4Sat12:572.91:323.46:410.18:350.44:487:03Third Quarter4Sat
5Sun2:022.82:403.47:490.29:440.34:497:02Waning Crescent5Sun
6Mon3:122.93:503.59:070.110:430.24:507:01Waning Crescent6Mon
7Tue4:193.04:523.710:190.011:370.04:517:00Waning Crescent7Tue
8Wed5:183.25:473.811:19-0.14:526:59Waning Crescent8Wed
9Thu6:113.46:373.812:26-0.112:14-0.24:536:57New Moon9Thu
10Fri7:013.57:243.81:12-0.21:04-0.24:546:56New Moon10Fri
11Sat7:493.68:093.71:53-0.21:50-0.14:556:55New Moon11Sat
12Sun8:343.68:513.52:30-0.22:310.04:566:53Waxing Crescent12Sun
13Mon9:183.59:323.33:03-0.13:080.14:576:52Waxing Crescent13Mon
14Tue10:023.310:133.03:300.13:450.34:586:51Waxing Crescent14Tue
15Wed10:463.110:552.83:550.34:250.54:596:49Waxing Crescent15Wed
16Thu11:302.911:382.64:270.45:150.75:006:48First Quarter16Thu
17Fri12:152.85:070.66:240.85:016:46First Quarter17Fri
18Sat12:232.41:032.75:550.77:440.95:026:45First Quarter18Sat
19Sun1:132.31:592.76:510.88:550.95:036:43First Quarter19Sun
20Mon2:132.23:062.77:560.89:530.85:046:42Waxing Gibbous20Mon
21Tue3:232.34:072.89:130.710:420.65:056:41Waxing Gibbous21Tue
22Wed4:212.54:543.010:160.611:240.55:066:39Waxing Gibbous22Wed
23Thu5:082.75:343.211:050.45:076:37Waxing Gibbous23Thu
24Fri5:492.96:143.412:030.311:50 AM0.25:086:36Full Moon24Fri
25Sat6:313.26:543.512:380.112:330.05:096:34Full Moon25Sat
26Sun7:133.47:363.61:11-0.11:16-0.15:106:33Full Moon26Sun
27Mon7:573.68:193.61:43-0.21:59-0.15:116:31Full Moon27Mon
28Tue8:413.79:053.52:17-0.22:42-0.15:126:30Waning Gibbous28Tue
29Wed9:283.79:533.42:54-0.23:290.05:136:28Waning Gibbous29Wed
30Thu10:193.710:463.23:35-0.24:230.25:146:26Waning Gibbous30Thu
31Fri11:143.611:433.14:220.05:390.35:156:25Third Quarter31Fri
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 transitional phase. Tonight's moon is 21% 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 Waxing Crescent (21% 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

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