Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 26, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 00m at 11:46 am (0.6 ft)
Next high tide : 6:45 pm (3.0 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Apr 1970

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:552.93:292.69:480.19:520.05:296:10Waning Crescent1Wed
2Thu4:053.04:333.010:39-0.110:57-0.25:286:11Waning Crescent2Thu
3Fri5:033.25:273.311:23-0.411:52-0.45:266:12Waning Crescent3Fri
4Sat5:533.36:163.612:04-0.55:246:14New Moon4Sat
5Sun6:413.37:023.812:43-0.612:43-0.65:236:15New Moon5Sun
6Mon7:273.37:473.91:31-0.61:20-0.65:216:16New Moon6Mon
7Tue8:123.28:313.72:16-0.61:54-0.55:196:17New Moon7Tue
8Wed8:573.09:153.52:59-0.42:28-0.35:186:18Waxing Crescent8Wed
9Thu9:422.79:593.23:40-0.13:03-0.15:166:19Waxing Crescent9Thu
10Fri10:292.510:462.94:240.13:400.15:146:20Waxing Crescent10Fri
11Sat11:212.311:392.65:230.44:240.45:136:21First Quarter11Sat
12Sun12:172.16:390.65:190.65:116:22First Quarter12Sun
13Mon12:382.41:192.17:480.76:340.75:106:23First Quarter13Mon
14Tue1:472.22:292.18:490.78:240.75:086:24First Quarter14Tue
15Wed3:032.23:342.29:400.69:350.65:076:25First Quarter15Wed
16Thu4:022.34:252.410:210.510:270.55:056:26Waxing Gibbous16Thu
17Fri4:452.45:052.710:560.311:120.35:036:27Waxing Gibbous17Fri
18Sat5:212.55:392.911:250.211:540.15:026:28Waxing Gibbous18Sat
19Sun5:532.66:123.211:520.15:006:30Waxing Gibbous19Sun
20Mon6:272.76:463.312:330.012:180.04:596:31Full Moon20Mon
21Tue7:032.87:223.51:11-0.112:47-0.14:576:32Full Moon21Tue
22Wed7:412.88:003.51:47-0.21:20-0.24:566:33Full Moon22Wed
23Thu8:222.88:423.52:23-0.21:57-0.24:546:34Waning Gibbous23Thu
24Fri9:062.79:283.43:00-0.12:37-0.14:536:35Waning Gibbous24Fri
25Sat9:542.610:193.33:420.03:220.04:526:36Waning Gibbous25Sat
26Sun11:492.65:340.25:140.15:507:37Waning Gibbous26Sun
27Mon12:173.112:492.66:460.36:190.35:497:38Third Quarter27Mon
28Tue1:193.01:532.68:080.37:460.45:477:39Third Quarter28Tue
29Wed2:242.93:012.79:150.29:310.35:467:40Third Quarter29Wed
30Thu3:332.94:103.010:130.110:480.25:457:41Waning Crescent30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 3:15 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 92% 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 (92% 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