Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

50°
H -°
L 49°
NE
4mph
Low tide
9:02 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, October 18, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 2h 50m at 9:02 pm (0.9 ft)
Next high tide (tomorrow) : 2:19 am (2.1 ft)
Sunset today : 6:01 pm
Sunrise tomorrow : 7:01 am
Moon phase : First Quarter (50% 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 - Aug 1803

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:342.76:033.512:000.311:20 AM0.24:447:08Full Moon1Mon
2Tue6:222.96:493.712:420.112:130.04:457:06Full Moon2Tue
3Wed7:103.27:353.81:22-0.11:04-0.14:467:05Full Moon3Wed
4Thu7:573.48:203.81:59-0.21:55-0.24:477:04Full Moon4Thu
5Fri8:453.69:073.72:35-0.32:45-0.24:487:03Waning Gibbous5Fri
6Sat9:333.79:553.53:10-0.33:37-0.14:497:02Waning Gibbous6Sat
7Sun10:243.710:473.23:49-0.24:370.14:507:01Waning Gibbous7Sun
8Mon11:183.711:423.04:31-0.15:530.34:516:59Third Quarter8Mon
9Tue12:163.65:210.07:140.44:526:58Third Quarter9Tue
10Wed12:402.71:173.46:190.28:290.54:536:57Third Quarter10Wed
11Thu1:442.62:273.37:280.39:370.54:546:56Third Quarter11Thu
12Fri2:562.53:413.28:520.410:370.54:556:54Waning Crescent12Fri
13Sat4:062.64:453.310:080.411:290.44:566:53Waning Crescent13Sat
14Sun5:042.85:383.311:070.34:576:52Waning Crescent14Sun
15Mon5:552.96:243.412:140.311:57 AM0.24:586:50New Moon15Mon
16Tue6:413.17:053.412:550.212:410.24:596:49New Moon16Tue
17Wed7:243.27:423.31:300.11:200.25:006:47New Moon17Wed
18Thu8:043.28:163.22:000.11:540.25:016:46New Moon18Thu
19Fri8:413.28:493.12:250.12:270.35:026:45Waxing Crescent19Fri
20Sat9:153.29:212.92:460.22:590.45:036:43Waxing Crescent20Sat
21Sun9:493.19:542.83:080.33:330.55:046:42Waxing Crescent21Sun
22Mon10:233.010:312.63:350.44:120.65:056:40Waxing Crescent22Mon
23Tue11:002.911:132.44:080.54:570.85:066:39First Quarter23Tue
24Wed11:432.84:470.65:550.95:076:37First Quarter24Wed
25Thu12:002.312:322.75:350.77:181.05:086:36First Quarter25Thu
26Fri12:532.21:312.76:320.88:540.95:096:34First Quarter26Fri
27Sat1:562.22:422.87:390.79:570.85:106:32Waxing Gibbous27Sat
28Sun3:092.33:533.08:560.610:460.55:116:31Waxing Gibbous28Sun
29Mon4:162.64:503.310:100.411:290.35:126:29Waxing Gibbous29Mon
30Tue5:102.95:393.611:090.15:136:28Waxing Gibbous30Tue
31Wed5:593.36:253.812:080.012:02-0.15:146:26Full Moon31Wed
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 50% 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 (50% 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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