Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:41 am (0.7 ft)
Next high tide : in 2h 57m at 4:22 am (2.1 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:34 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jun 2083

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:563.29:234.13:08-0.52:41-0.45:158:13Full Moon1Tue
2Wed9:493.210:163.93:58-0.43:35-0.35:158:13Waning Gibbous2Wed
3Thu10:423.211:103.74:50-0.34:31-0.15:148:14Waning Gibbous3Thu
4Fri11:383.15:43-0.15:350.15:148:15Waning Gibbous4Fri
5Sat12:053.412:353.06:390.16:530.35:148:15Third Quarter5Sat
6Sun1:003.11:333.07:320.28:060.55:148:16Third Quarter6Sun
7Mon1:542.82:292.98:190.39:120.65:138:17Third Quarter7Mon
8Tue2:492.53:272.99:010.410:130.65:138:17Third Quarter8Tue
9Wed3:472.44:252.99:410.511:070.65:138:18Waning Crescent9Wed
10Thu4:452.35:183.010:200.511:540.65:138:18Waning Crescent10Thu
11Fri5:382.36:033.010:590.55:138:19Waning Crescent11Fri
12Sat6:242.46:443.112:380.511:40 AM0.45:138:19Waning Crescent12Sat
13Sun7:062.47:223.11:200.412:220.45:138:20New Moon13Sun
14Mon7:462.57:593.22:010.41:050.35:138:20New Moon14Mon
15Tue8:252.68:353.22:410.31:470.35:138:21New Moon15Tue
16Wed9:032.69:113.23:190.32:290.35:138:21New Moon16Wed
17Thu9:412.69:483.13:530.33:090.35:138:21Waxing Crescent17Thu
18Fri10:212.710:263.14:230.33:490.45:138:22Waxing Crescent18Fri
19Sat11:042.711:083.04:510.34:320.45:138:22Waxing Crescent19Sat
20Sun11:492.811:542.95:210.35:200.55:138:22Waxing Crescent20Sun
21Mon12:382.96:000.36:180.65:138:22First Quarter21Mon
22Tue12:432.81:293.06:450.37:250.65:148:22First Quarter22Tue
23Wed1:372.72:233.27:340.28:410.55:148:23First Quarter23Wed
24Thu2:362.73:223.38:290.210:020.45:148:23First Quarter24Thu
25Fri3:422.64:263.59:290.111:130.25:158:23Waxing Gibbous25Fri
26Sat4:512.75:293.710:340.05:158:23Waxing Gibbous26Sat
27Sun5:552.96:283.912:130.011:37 AM-0.15:158:23Waxing Gibbous27Sun
28Mon6:533.07:244.11:10-0.212:39-0.25:168:23Full Moon28Mon
29Tue7:483.28:184.12:04-0.31:39-0.35:168:23Full Moon29Tue
30Wed8:423.39:104.02:55-0.32:37-0.35:178:23Full Moon30Wed
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 7:01 am — 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 transitional phase. Tonight's moon is 79% 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 Waxing Gibbous (79% 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