Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

62°
H -°
L 57°
N
10mph
High tide
10:39 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, September 14, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 4:07 am (0.2 ft)
Next high tide : in 9m at 10:39 pm (2.9 ft)
Sunset today : 6:57 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Crescent (14% 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 - Apr 1867

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:522.75:092.711:130.111:280.05:336:14Waning Crescent1Mon
2Tue5:332.95:503.011:47-0.15:326:15Waning Crescent2Tue
3Wed6:143.16:313.312:11-0.212:20-0.35:306:16New Moon3Wed
4Thu6:563.27:133.612:52-0.412:54-0.55:286:17New Moon4Thu
5Fri7:393.37:573.71:34-0.51:30-0.65:276:19New Moon5Fri
6Sat8:243.38:433.82:16-0.52:08-0.65:256:20Waxing Crescent6Sat
7Sun9:113.29:313.72:59-0.52:49-0.55:236:21Waxing Crescent7Sun
8Mon10:023.110:233.63:46-0.43:34-0.45:226:22Waxing Crescent8Mon
9Tue10:572.911:203.44:44-0.24:26-0.25:206:23Waxing Crescent9Tue
10Wed11:572.86:070.05:290.05:186:24First Quarter10Wed
11Thu12:223.21:012.77:270.16:570.25:176:25First Quarter11Thu
12Fri1:293.02:092.78:360.18:370.25:156:26First Quarter12Fri
13Sat2:422.93:202.89:370.19:500.15:146:27Waxing Gibbous13Sat
14Sun3:522.94:223.010:300.010:490.05:126:28Waxing Gibbous14Sun
15Mon4:502.95:153.211:16-0.111:40-0.15:116:29Waxing Gibbous15Mon
16Tue5:403.06:033.411:57-0.25:096:30Waxing Gibbous16Tue
17Wed6:243.06:463.512:25-0.212:34-0.25:076:31Full Moon17Wed
18Thu7:063.07:273.51:06-0.21:05-0.25:066:32Full Moon18Thu
19Fri7:453.08:053.41:43-0.21:32-0.15:046:33Full Moon19Fri
20Sat8:232.98:413.32:15-0.11:57-0.15:036:34Full Moon20Sat
21Sun8:592.89:173.12:45-0.12:250.05:016:36Waning Gibbous21Sun
22Mon9:372.69:522.93:150.12:580.25:006:37Waning Gibbous22Mon
23Tue10:162.510:302.73:480.23:350.44:586:38Waning Gibbous23Tue
24Wed10:582.311:132.64:290.44:170.54:576:39Waning Gibbous24Wed
25Thu11:452.25:200.55:080.64:566:40Third Quarter25Thu
26Fri12:022.512:352.26:280.66:090.74:546:41Third Quarter26Fri
27Sat12:552.41:312.27:440.67:240.74:536:42Third Quarter27Sat
28Sun1:552.42:322.48:470.59:000.64:516:43Third Quarter28Sun
29Mon3:012.53:342.69:360.410:070.44:506:44Waning Crescent29Mon
30Tue4:022.74:283.010:170.210:580.14:496:45Waning Crescent30Tue
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 14% 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 Crescent (14% 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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