Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

60°
H 72°
L 66°
NE
4mph
High tide
9:02 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 12, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 3:12 pm (-0.1 ft)
Next high tide : in 4h 43m at 9:02 am (3.8 ft)
Sunset today : 7:01 pm
Sunrise tomorrow : 6:24 am
Moon phase : New Moon (3% 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 - May 1873

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:492.511:032.84:480.33:540.44:476:47Waxing Crescent1Thu
2Fri11:432.311:572.65:530.54:430.64:456:48First Quarter2Fri
3Sat12:402.27:000.65:470.74:446:49First Quarter3Sat
4Sun12:552.41:412.28:010.77:190.84:436:50First Quarter4Sun
5Mon1:592.32:452.38:540.68:460.84:426:51First Quarter5Mon
6Tue3:072.33:432.49:400.69:480.64:406:52Waxing Gibbous6Tue
7Wed4:022.44:292.610:170.510:370.54:396:53Waxing Gibbous7Wed
8Thu4:442.55:072.910:490.411:210.34:386:54Waxing Gibbous8Thu
9Fri5:202.55:413.111:180.24:376:55Waxing Gibbous9Fri
10Sat5:562.66:163.312:030.111:45 AM0.14:366:56Full Moon10Sat
11Sun6:322.76:523.512:430.012:150.04:356:57Full Moon11Sun
12Mon7:112.87:313.61:22-0.112:50-0.14:346:58Full Moon12Mon
13Tue7:532.88:123.62:00-0.11:28-0.14:336:59Full Moon13Tue
14Wed8:372.88:573.62:38-0.12:09-0.14:327:00Waning Gibbous14Wed
15Thu9:242.89:463.53:180.02:530.04:317:01Waning Gibbous15Thu
16Fri10:162.710:403.34:050.13:420.14:307:02Waning Gibbous16Fri
17Sat11:132.711:393.25:050.24:400.34:297:03Waning Gibbous17Sat
18Sun12:142.76:190.25:550.44:287:04Third Quarter18Sun
19Mon12:403.11:172.87:270.27:350.44:277:05Third Quarter19Mon
20Tue1:443.02:233.08:260.19:020.34:267:06Third Quarter20Tue
21Wed2:512.93:293.29:200.010:090.24:267:07Waning Crescent21Wed
22Thu3:552.94:283.510:08-0.111:070.04:257:08Waning Crescent22Thu
23Fri4:523.05:203.710:51-0.111:59-0.14:247:09Waning Crescent23Fri
24Sat5:443.06:083.811:33-0.24:237:10New Moon24Sat
25Sun6:333.06:553.812:49-0.212:13-0.24:237:10New Moon25Sun
26Mon7:203.07:403.71:35-0.212:53-0.14:227:11New Moon26Mon
27Tue8:062.98:233.62:18-0.11:330.04:217:12New Moon27Tue
28Wed8:522.89:073.32:580.02:120.14:217:13Waxing Crescent28Wed
29Thu9:372.79:503.13:380.22:520.34:207:14Waxing Crescent29Thu
30Fri10:252.610:352.94:220.33:330.54:207:14Waxing Crescent30Fri
31Sat11:152.511:212.75:140.54:200.64:197:15Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

www.USHarbors.com

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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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 3% 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 New Moon (3% 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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