41.1867’ N, 71.5783’ W

Block Island, RI

69°
H 69°
L 62°
SW
13mph
Low tide
5:59 pm

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, October 1, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 45m at 5:59 pm (0.4 ft)
Next high tide (tomorrow) : 12:06 am (2.8 ft)
Sunset today : 6:28 pm
Sunrise tomorrow : 6:43 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 1836

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:153.27:384.01:18-0.51:00-0.54:476:47Full Moon1Sun
2Mon8:033.28:264.12:05-0.51:42-0.54:456:48Full Moon2Mon
3Tue8:523.19:163.92:53-0.52:28-0.44:446:49Waning Gibbous3Tue
4Wed9:443.010:113.73:44-0.33:16-0.24:436:50Waning Gibbous4Wed
5Thu10:412.911:113.54:45-0.14:110.04:426:51Waning Gibbous5Thu
6Fri11:422.85:590.15:240.24:406:52Third Quarter6Fri
7Sat12:153.212:462.77:100.27:090.34:396:53Third Quarter7Sat
8Sun1:213.01:532.78:130.28:340.44:386:54Third Quarter8Sun
9Mon2:282.93:022.99:090.29:420.34:376:55Third Quarter9Mon
10Tue3:342.84:033.09:580.210:390.24:366:56Waning Crescent10Tue
11Wed4:292.74:553.210:400.111:280.24:356:57Waning Crescent11Wed
12Thu5:172.75:403.311:150.14:346:58Waning Crescent12Thu
13Fri6:002.76:213.412:120.111:45 AM0.14:336:59New Moon13Fri
14Sat6:412.76:593.412:520.112:140.14:327:00New Moon14Sat
15Sun7:202.77:343.31:290.112:430.14:317:01New Moon15Sun
16Mon7:582.78:073.22:020.11:170.14:307:02New Moon16Mon
17Tue8:362.68:413.12:330.21:520.24:297:03Waxing Crescent17Tue
18Wed9:142.59:163.03:040.32:300.34:287:04Waxing Crescent18Wed
19Thu9:542.49:542.83:380.43:090.54:277:05Waxing Crescent19Thu
20Fri10:372.310:372.74:180.53:510.64:267:06Waxing Crescent20Fri
21Sat11:252.211:262.65:110.64:410.74:257:07Waxing Crescent21Sat
22Sun12:152.36:200.75:410.84:257:08First Quarter22Sun
23Mon12:172.61:082.47:170.66:510.84:247:09First Quarter23Mon
24Tue1:122.52:042.58:020.68:090.74:237:09First Quarter24Tue
25Wed2:122.63:022.88:450.49:250.54:237:10Waxing Gibbous25Wed
26Thu3:162.63:583.19:290.210:250.24:227:11Waxing Gibbous26Thu
27Fri4:162.84:493.510:130.011:190.04:217:12Waxing Gibbous27Fri
28Sat5:102.95:393.810:58-0.14:217:13Waxing Gibbous28Sat
29Sun6:033.06:284.112:11-0.211:45 AM-0.34:207:14Full Moon29Sun
30Mon6:543.17:194.21:03-0.412:34-0.44:207:14Full Moon30Mon
31Tue7:463.28:114.21:55-0.51:25-0.44:197:15Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a transitional phase. Tonight's moon is 71% 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 shifting between spring and neap.

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 Waning Gibbous (71% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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