Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 4h 43m at 4:08 pm (0.5 ft)
Next high tide : 10:46 pm (3.0 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:18 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:572.89:133.22:520.02:300.05:447:42Full Moon1Sat
2Sun9:312.79:453.13:220.03:000.15:427:43Full Moon2Sun
3Mon10:052.610:193.03:520.13:330.25:417:44Waning Gibbous3Mon
4Tue10:432.510:562.94:250.24:080.35:407:45Waning Gibbous4Tue
5Wed11:242.411:382.85:020.34:480.55:387:47Waning Gibbous5Wed
6Thu12:102.35:460.55:340.65:377:48Waning Gibbous6Thu
7Fri12:262.71:012.36:400.56:310.75:367:49Third Quarter7Fri
8Sat1:202.61:562.47:440.57:380.75:357:50Third Quarter8Sat
9Sun2:182.62:562.58:500.48:560.65:347:51Third Quarter9Sun
10Mon3:222.74:012.89:520.310:240.45:337:52Waning Crescent10Mon
11Tue4:292.85:023.110:450.111:300.15:327:53Waning Crescent11Tue
12Wed5:303.05:563.511:33-0.25:317:54Waning Crescent12Wed
13Thu6:243.26:473.912:26-0.212:19-0.45:297:55Waning Crescent13Thu
14Fri7:163.47:384.11:19-0.41:05-0.55:287:56New Moon14Fri
15Sat8:073.58:284.22:12-0.61:53-0.65:277:57New Moon15Sat
16Sun8:593.59:194.23:04-0.62:41-0.65:277:58New Moon16Sun
17Mon9:513.410:114.13:55-0.63:29-0.55:267:59Waxing Crescent17Mon
18Tue10:443.311:053.84:49-0.44:20-0.35:258:00Waxing Crescent18Tue
19Wed11:403.15:49-0.25:160.05:248:01Waxing Crescent19Wed
20Thu12:023.512:393.06:550.06:300.25:238:02First Quarter20Thu
21Fri1:023.21:402.97:580.17:580.45:228:03First Quarter21Fri
22Sat2:032.92:422.98:570.39:120.55:218:03First Quarter22Sat
23Sun3:062.73:452.99:500.310:170.55:218:04First Quarter23Sun
24Mon4:102.64:452.910:390.411:120.55:208:05Waxing Gibbous24Mon
25Tue5:082.55:373.011:200.411:590.45:198:06Waxing Gibbous25Tue
26Wed5:572.66:223.111:560.35:198:07Waxing Gibbous26Wed
27Thu6:392.67:023.212:410.312:270.35:188:08Waxing Gibbous27Thu
28Fri7:182.67:393.31:210.312:560.25:178:09Full Moon28Fri
29Sat7:552.78:133.31:580.21:260.25:178:10Full Moon29Sat
30Sun8:302.78:473.32:340.11:590.25:168:10Full Moon30Sun
31Mon9:062.79:203.23:090.12:340.25:168:11Full Moon31Mon
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 7:27 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 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 Waning 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