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 40m 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 - Aug 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu4:132.34:552.89:450.711:310.75:428:03Waning Crescent1Thu
2Fri5:142.45:482.910:470.65:438:01Waning Crescent2Fri
3Sat6:042.56:323.012:160.611:39 AM0.55:448:00Waning Crescent3Sat
4Sun6:472.67:093.112:580.512:240.45:457:59Waning Crescent4Sun
5Mon7:272.87:433.21:370.41:070.35:467:58New Moon5Mon
6Tue8:032.98:153.22:130.31:470.25:477:57New Moon6Tue
7Wed8:393.08:483.32:440.22:260.25:487:55New Moon7Wed
8Thu9:143.19:223.23:100.13:020.25:497:54New Moon8Thu
9Fri9:513.29:593.23:310.13:380.25:507:53Waxing Crescent9Fri
10Sat10:303.210:393.13:560.14:160.35:517:52Waxing Crescent10Sat
11Sun11:123.211:243.04:280.14:590.45:527:50Waxing Crescent11Sun
12Mon12:003.25:070.25:490.55:537:49First Quarter12Mon
13Tue12:152.912:523.25:530.26:520.65:547:48First Quarter13Tue
14Wed1:102.81:493.36:490.38:130.65:557:46First Quarter14Wed
15Thu2:112.72:523.37:530.39:450.55:567:45First Quarter15Thu
16Fri3:182.84:033.49:060.310:550.35:577:43Waxing Gibbous16Fri
17Sat4:302.95:113.610:310.111:520.15:587:42Waxing Gibbous17Sat
18Sun5:363.26:103.811:430.05:597:40Waxing Gibbous18Sun
19Mon6:343.47:043.912:44-0.112:44-0.26:007:39Full Moon19Mon
20Tue7:273.77:554.01:31-0.31:40-0.36:017:38Full Moon20Tue
21Wed8:173.88:434.02:16-0.42:32-0.46:027:36Full Moon21Wed
22Thu9:063.99:303.82:57-0.43:21-0.36:037:35Full Moon22Thu
23Fri9:533.810:153.63:35-0.34:07-0.16:047:33Waning Gibbous23Fri
24Sat10:403.711:023.34:09-0.24:530.16:057:31Waning Gibbous24Sat
25Sun11:273.511:503.04:420.05:450.46:067:30Waning Gibbous25Sun
26Mon12:173.25:160.36:490.66:077:28Third Quarter26Mon
27Tue12:402.71:083.05:570.57:590.86:087:27Third Quarter27Tue
28Wed1:332.52:032.86:470.79:040.96:097:25Third Quarter28Wed
29Thu2:302.43:072.77:480.810:050.96:107:24Third Quarter29Thu
30Fri3:362.34:192.79:050.810:590.86:117:22Waning Crescent30Fri
31Sat4:422.45:172.710:240.811:440.76:127:20Waning Crescent31Sat
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