Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

62°
H 66°
L 58°
NE
13mph
High tide
2:36 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:44 pm (1.0 ft)
Next high tide : in 7h 07m at 2:36 pm (2.5 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% 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 - Jan 1860

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:262.312:442.06:420.66:340.37:164:31First Quarter1Sun
2Mon1:152.41:392.08:160.67:270.37:164:32First Quarter2Mon
3Tue2:112.52:442.09:320.58:250.27:164:33Waxing Gibbous3Tue
4Wed3:152.73:512.110:280.39:260.17:164:34Waxing Gibbous4Wed
5Thu4:172.94:492.311:180.010:25-0.17:164:35Waxing Gibbous5Thu
6Fri5:113.25:402.512:04-0.27:164:36Waxing Gibbous6Fri
7Sat6:023.46:302.812:50-0.47:164:37Full Moon7Sat
8Sun6:523.67:193.012:13-0.61:34-0.57:154:38Full Moon8Sun
9Mon7:413.78:083.21:05-0.72:16-0.67:154:39Full Moon9Mon
10Tue8:303.78:583.31:57-0.72:56-0.77:154:40Waning Gibbous10Tue
11Wed9:183.59:503.32:49-0.73:37-0.67:154:41Waning Gibbous11Wed
12Thu10:093.310:433.33:43-0.54:19-0.57:154:42Waning Gibbous12Thu
13Fri11:022.911:403.24:46-0.35:05-0.47:144:43Third Quarter13Fri
14Sat11:572.66:04-0.15:58-0.27:144:44Third Quarter14Sat
15Sun12:393.112:562.37:250.16:580.07:144:45Third Quarter15Sun
16Mon1:423.02:012.18:400.28:090.17:134:46Third Quarter16Mon
17Tue2:512.93:142.09:480.29:240.17:134:48Waning Crescent17Tue
18Wed4:002.84:212.110:450.210:270.17:124:49Waning Crescent18Wed
19Thu4:592.95:162.211:350.111:200.07:124:50Waning Crescent19Thu
20Fri5:492.96:032.412:190.07:114:51Waning Crescent20Fri
21Sat6:332.96:462.512:050.012:58-0.17:104:52New Moon21Sat
22Sun7:123.07:262.612:44-0.11:32-0.27:104:53New Moon22Sun
23Mon7:483.08:032.61:19-0.12:03-0.27:094:55New Moon23Mon
24Tue8:212.98:382.61:51-0.12:29-0.27:084:56New Moon24Tue
25Wed8:522.89:102.62:21-0.12:53-0.27:084:57Waxing Crescent25Wed
26Thu9:232.79:432.62:520.03:16-0.27:074:58Waxing Crescent26Thu
27Fri9:562.510:172.53:260.13:43-0.17:065:00Waxing Crescent27Fri
28Sat10:322.310:552.54:030.24:160.07:055:01Waxing Crescent28Sat
29Sun11:142.111:382.44:470.34:540.17:045:02First Quarter29Sun
30Mon12:022.05:410.55:410.27:035:03First Quarter30Mon
31Tue12:272.412:571.96:500.56:360.27:025:05First Quarter31Tue
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 58% 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 (58% 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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