Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 9:27 pm (0.6 ft)
Next high tide : in 2h 45m at 2:47 pm (3.1 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:13 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 2041

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:083.15:080.56:160.76:436:27First Quarter1Tue
2Wed12:372.41:073.06:020.67:410.86:446:26First Quarter2Wed
3Thu1:382.42:133.07:090.69:210.76:456:24First Quarter3Thu
4Fri2:472.53:253.18:310.610:270.56:466:22First Quarter4Fri
5Sat3:592.74:363.310:070.411:190.26:476:21Waxing Gibbous5Sat
6Sun5:063.15:363.511:210.16:486:19Waxing Gibbous6Sun
7Mon6:023.56:293.712:03-0.112:19-0.16:496:18Waxing Gibbous7Mon
8Tue6:523.87:183.812:45-0.31:12-0.36:506:16Full Moon8Tue
9Wed7:414.18:063.71:25-0.42:04-0.46:526:14Full Moon9Wed
10Thu8:284.28:543.62:04-0.52:54-0.46:536:13Full Moon10Thu
11Fri9:154.29:413.42:42-0.43:42-0.36:546:11Waning Gibbous11Fri
12Sat10:024.010:293.13:19-0.34:30-0.16:556:09Waning Gibbous12Sat
13Sun10:513.711:212.93:57-0.15:240.26:566:08Waning Gibbous13Sun
14Mon11:433.44:380.26:330.56:576:06Waning Gibbous14Mon
15Tue12:172.612:423.05:250.57:480.76:586:05Third Quarter15Tue
16Wed1:182.41:482.86:260.78:560.86:596:03Third Quarter16Wed
17Thu2:232.43:002.68:170.99:560.87:006:02Third Quarter17Thu
18Fri3:322.44:102.69:430.910:460.77:016:00Third Quarter18Fri
19Sat4:362.55:062.610:430.811:270.67:035:59Waning Crescent19Sat
20Sun5:272.75:502.711:300.67:045:57Waning Crescent20Sun
21Mon6:082.96:252.812:010.512:110.57:055:56Waning Crescent21Mon
22Tue6:433.16:572.912:300.412:490.37:065:54Waning Crescent22Tue
23Wed7:153.27:272.912:560.21:260.27:075:53New Moon23Wed
24Thu7:463.47:582.91:200.12:010.17:085:52New Moon24Thu
25Fri8:183.58:322.91:450.12:360.17:095:50New Moon25Fri
26Sat8:523.59:092.82:130.13:080.17:115:49New Moon26Sat
27Sun9:293.49:492.72:460.13:420.27:125:47Waxing Crescent27Sun
28Mon10:103.410:342.63:220.24:190.37:135:46Waxing Crescent28Mon
29Tue10:573.211:242.54:020.25:040.47:145:45Waxing Crescent29Tue
30Wed11:513.14:480.46:040.57:155:44Waxing Crescent30Wed
31Thu12:232.512:523.05:450.57:360.67:165:42First Quarter31Thu
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 6:07 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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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