Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

77°
H 77°
L 64°
SSW
9mph
High tide
6:20 pm
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 12:42 am (0.6 ft)
Next high tide : in 5h 00m at 6:20 pm (2.9 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waxing Gibbous (88% 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 - Jul 1917

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:532.44:293.39:330.311:160.34:167:22Waxing Gibbous1Sun
2Mon4:512.65:223.510:310.24:177:22Waxing Gibbous2Mon
3Tue5:452.86:143.812:060.111:26 AM0.04:177:22Full Moon3Tue
4Wed6:373.07:043.912:54-0.112:21-0.24:187:22Full Moon4Wed
5Thu7:283.27:544.01:40-0.21:16-0.34:197:22Full Moon5Thu
6Fri8:193.48:444.02:24-0.32:11-0.34:197:22Waning Gibbous6Fri
7Sat9:103.59:343.83:07-0.43:05-0.24:207:21Waning Gibbous7Sat
8Sun10:033.610:263.63:50-0.34:04-0.14:207:21Waning Gibbous8Sun
9Mon10:573.611:203.34:35-0.25:150.14:217:21Waning Gibbous9Mon
10Tue11:543.55:24-0.16:340.34:227:20Third Quarter10Tue
11Wed12:153.012:523.56:160.07:470.44:227:20Third Quarter11Wed
12Thu1:132.71:533.47:100.28:560.54:237:19Third Quarter12Thu
13Fri2:162.63:003.38:100.310:000.54:247:19Waning Crescent13Fri
14Sat3:242.54:063.29:150.410:550.54:257:18Waning Crescent14Sat
15Sun4:272.55:033.210:160.411:450.44:257:18Waning Crescent15Sun
16Mon5:222.65:533.311:090.44:267:17Waning Crescent16Mon
17Tue6:102.86:373.312:300.411:56 AM0.34:277:16New Moon17Tue
18Wed6:562.97:183.31:110.312:380.34:287:16New Moon18Wed
19Thu7:382.97:543.31:470.21:170.34:297:15New Moon19Thu
20Fri8:173.08:283.22:200.21:530.34:307:14New Moon20Fri
21Sat8:552.99:003.12:480.22:280.34:317:14Waxing Crescent21Sat
22Sun9:312.99:323.03:120.23:030.44:317:13Waxing Crescent22Sun
23Mon10:062.910:062.83:340.33:410.54:327:12Waxing Crescent23Mon
24Tue10:422.810:442.74:000.44:230.64:337:11Waxing Crescent24Tue
25Wed11:212.811:272.54:330.45:120.74:347:10First Quarter25Wed
26Thu12:042.85:130.56:100.84:357:09First Quarter26Thu
27Fri12:142.412:532.96:000.57:190.84:367:08First Quarter27Fri
28Sat1:082.31:492.96:540.58:440.74:377:07First Quarter28Sat
29Sun2:102.32:553.17:540.59:560.64:387:06Waxing Gibbous29Sun
30Mon3:202.54:023.39:030.410:530.44:397:05Waxing Gibbous30Mon
31Tue4:262.75:013.610:120.211:430.14:407:04Waxing Gibbous31Tue
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 spring phase. Tonight's moon is 88% 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 Waxing Gibbous (88% 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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