Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

52°
H -°
L 49°
NNE
26mph
Low tide
11:14 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 51m at 11:14 pm (0.5 ft)
Next high tide (tomorrow) : 5:14 am (2.8 ft)
Sunset today : 5:56 pm
Sunrise tomorrow : 7:04 am
Moon phase : Waxing Gibbous (78% 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 - Jan 1800

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:542.55:360.36:020.27:164:32First Quarter1Wed
2Thu12:272.512:442.26:520.56:420.37:164:33First Quarter2Thu
3Fri1:202.41:352.08:010.67:210.37:164:34First Quarter3Fri
4Sat2:152.42:351.99:050.58:060.47:164:35First Quarter4Sat
5Sun3:152.43:401.910:020.58:590.47:164:36Waxing Gibbous5Sun
6Mon4:102.54:341.910:510.49:520.37:164:37Waxing Gibbous6Mon
7Tue4:562.65:192.011:360.210:410.27:164:38Waxing Gibbous7Tue
8Wed5:372.75:592.212:190.17:164:39Waxing Gibbous8Wed
9Thu6:152.96:372.31:000.07:154:40Full Moon9Thu
10Fri6:523.07:152.412:09-0.11:38-0.17:154:41Full Moon10Fri
11Sat7:303.17:542.512:51-0.22:12-0.17:154:42Full Moon11Sat
12Sun8:083.18:352.61:33-0.22:42-0.27:154:43Full Moon12Sun
13Mon8:483.19:182.72:14-0.33:10-0.27:144:44Waning Gibbous13Mon
14Tue9:303.010:032.72:56-0.23:40-0.27:144:45Waning Gibbous14Tue
15Wed10:152.910:532.83:42-0.14:15-0.27:134:46Waning Gibbous15Wed
16Thu11:052.711:462.84:350.04:59-0.27:134:47Third Quarter16Thu
17Fri11:592.55:400.15:49-0.17:134:48Third Quarter17Fri
18Sat12:422.912:582.37:040.26:46-0.17:124:50Third Quarter18Sat
19Sun1:433.02:052.28:350.17:52-0.17:114:51Third Quarter19Sun
20Mon2:523.03:182.29:510.09:09-0.17:114:52Waning Crescent20Mon
21Tue4:023.24:282.410:52-0.210:23-0.27:104:53Waning Crescent21Tue
22Wed5:043.35:272.611:47-0.311:25-0.47:104:54Waning Crescent22Wed
23Thu5:593.46:202.812:38-0.47:094:55New Moon23Thu
24Fri6:503.57:102.912:21-0.51:24-0.57:084:57New Moon24Fri
25Sat7:383.57:573.01:13-0.52:06-0.67:074:58New Moon25Sat
26Sun8:233.48:423.01:59-0.52:43-0.57:074:59New Moon26Sun
27Mon9:053.29:262.92:40-0.43:16-0.47:065:00Waxing Crescent27Mon
28Tue9:462.910:092.83:18-0.23:45-0.37:055:02Waxing Crescent28Tue
29Wed10:262.710:522.63:560.04:11-0.27:045:03Waxing Crescent29Wed
30Thu11:072.411:342.54:370.24:410.07:035:04Waxing Crescent30Thu
31Fri11:502.15:280.45:170.27:025:05First 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 78% 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 Gibbous (78% 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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