Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

66°
H -°
L 65°
SSE
8mph
High tide
9:19 pm
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 (tomorrow) : 3:14 am (-0.1 ft)
Next high tide : in 2h 13m at 9:19 pm (3.4 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 - Oct 1871

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:573.59:193.02:160.03:020.25:465:33Waning Gibbous1Sun
2Mon9:343.39:582.82:440.23:330.45:475:31Waning Gibbous2Mon
3Tue10:113.110:412.63:170.44:090.65:485:29Waning Gibbous3Tue
4Wed10:512.811:292.43:540.54:580.85:495:28Third Quarter4Wed
5Thu11:362.74:380.76:420.95:505:26Third Quarter5Thu
6Fri12:212.212:292.65:330.98:060.95:515:24Third Quarter6Fri
7Sat1:202.21:322.56:400.99:090.95:535:23Third Quarter7Sat
8Sun2:282.22:472.68:040.99:580.75:545:21Third Quarter8Sun
9Mon3:342.43:522.79:270.710:390.65:555:20Waning Crescent9Mon
10Tue4:232.74:392.910:230.511:130.45:565:18Waning Crescent10Tue
11Wed5:053.05:203.111:090.311:430.25:575:16Waning Crescent11Wed
12Thu5:443.36:003.311:530.05:585:15New Moon12Thu
13Fri6:253.66:423.412:120.012:36-0.15:595:13New Moon13Fri
14Sat7:073.97:263.512:43-0.21:20-0.36:005:12New Moon14Sat
15Sun7:514.08:113.41:18-0.32:04-0.36:015:10New Moon15Sun
16Mon8:374.08:593.31:56-0.32:50-0.26:025:09Waxing Crescent16Mon
17Tue9:263.99:503.12:37-0.23:40-0.16:035:07Waxing Crescent17Tue
18Wed10:193.810:472.93:22-0.14:420.16:055:05Waxing Crescent18Wed
19Thu11:193.611:492.84:140.16:080.36:065:04First Quarter19Thu
20Fri12:253.45:220.37:280.46:075:02First Quarter20Fri
21Sat12:562.81:353.27:110.48:360.36:085:01First Quarter21Sat
22Sun2:072.82:473.18:450.49:340.36:095:00First Quarter22Sun
23Mon3:172.93:533.19:530.310:240.26:104:58Waxing Gibbous23Mon
24Tue4:183.14:473.210:490.211:060.16:114:57Waxing Gibbous24Tue
25Wed5:103.45:343.211:370.111:430.06:134:55Waxing Gibbous25Wed
26Thu5:553.56:163.212:210.06:144:54Full Moon26Thu
27Fri6:363.66:563.212:150.01:000.06:154:53Full Moon27Fri
28Sat7:153.67:343.112:43-0.11:360.06:164:51Full Moon28Sat
29Sun7:513.58:123.01:090.02:080.16:174:50Full Moon29Sun
30Mon8:253.48:492.81:370.12:360.26:184:49Waning Gibbous30Mon
31Tue8:583.29:272.62:090.23:050.36:204:47Waning Gibbous31Tue
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.
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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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