Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

48°
H 51°
L 41°
N
16mph
High tide
12:47 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, October 17, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 7:48 pm (0.9 ft)
Next high tide : in 3h 06m at 12:47 pm (2.6 ft)
Sunset today : 6:02 pm
Sunrise tomorrow : 7:00 am
Moon phase : First Quarter (41% 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 1806

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:413.04:152.410:410.09:55-0.27:164:32Waxing Gibbous1Wed
2Thu4:423.35:132.711:34-0.310:55-0.57:164:32Waxing Gibbous2Thu
3Fri5:383.66:072.912:24-0.57:164:33Full Moon3Fri
4Sat6:313.86:593.21:12-0.77:164:34Full Moon4Sat
5Sun7:223.97:503.312:47-0.81:59-0.87:164:35Full Moon5Sun
6Mon8:133.98:413.41:42-0.82:44-0.87:164:36Waning Gibbous6Mon
7Tue9:033.79:323.42:34-0.83:27-0.77:164:37Waning Gibbous7Tue
8Wed9:533.410:253.33:28-0.64:11-0.67:164:38Waning Gibbous8Wed
9Thu10:453.111:213.24:27-0.44:58-0.47:154:39Waning Gibbous9Thu
10Fri11:392.75:39-0.15:49-0.27:154:40Third Quarter10Fri
11Sat12:183.012:352.46:560.16:450.07:154:41Third Quarter11Sat
12Sun1:182.81:352.18:090.37:470.27:154:42Third Quarter12Sun
13Mon2:232.72:432.09:160.38:540.37:144:43Waning Crescent13Mon
14Tue3:312.63:512.010:140.39:550.37:144:44Waning Crescent14Tue
15Wed4:312.74:482.111:040.310:460.27:144:46Waning Crescent15Wed
16Thu5:222.75:362.211:470.211:290.17:134:47Waning Crescent16Thu
17Fri6:052.86:182.312:270.17:134:48Waning Crescent17Fri
18Sat6:442.96:562.512:090.01:03-0.17:124:49New Moon18Sat
19Sun7:192.97:322.512:45-0.11:36-0.27:124:50New Moon19Sun
20Mon7:512.98:052.61:19-0.12:06-0.27:114:51New Moon20Mon
21Tue8:212.98:382.61:52-0.12:31-0.27:104:53New Moon21Tue
22Wed8:522.89:112.62:24-0.12:54-0.27:104:54Waxing Crescent22Wed
23Thu9:252.79:472.62:560.03:19-0.27:094:55Waxing Crescent23Thu
24Fri10:022.510:262.63:320.13:50-0.17:084:56Waxing Crescent24Fri
25Sat10:442.411:112.64:130.24:27-0.17:084:57Waxing Crescent25Sat
26Sun11:332.25:020.35:120.07:074:59First Quarter26Sun
27Mon12:012.612:272.16:040.46:060.07:065:00First Quarter27Mon
28Tue12:572.71:292.17:270.47:080.07:055:01First Quarter28Tue
29Wed2:022.72:402.29:160.28:19-0.17:045:02Waxing Gibbous29Wed
30Thu3:152.93:532.410:240.09:37-0.27:035:04Waxing Gibbous30Thu
31Fri4:253.24:562.611:18-0.310:47-0.57:025:05Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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 41% 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 (41% 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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