Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, June 27, 2026
The tide is currently falling in Block Island, RI.
Next low tide (tomorrow) : in 6h 10m at 1:33 am (0.5 ft)
Next high tide (tomorrow) : 7:22 am (2.4 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waxing Gibbous (95% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:182.42:553.07:570.710:060.66:436:28First Quarter1Sun
2Mon3:302.54:083.19:270.610:590.46:446:27Waxing Gibbous2Mon
3Tue4:402.95:123.410:510.311:430.16:456:25Waxing Gibbous3Tue
4Wed5:383.36:063.611:530.06:466:23Waxing Gibbous4Wed
5Thu6:303.76:563.712:24-0.212:47-0.26:476:22Full Moon5Thu
6Fri7:184.07:443.71:03-0.41:40-0.46:486:20Full Moon6Fri
7Sat8:064.28:323.71:42-0.52:31-0.56:496:18Full Moon7Sat
8Sun8:544.39:213.52:22-0.53:21-0.46:506:17Full Moon8Sun
9Mon9:424.210:103.33:02-0.44:11-0.26:516:15Waning Gibbous9Mon
10Tue10:323.911:013.03:43-0.25:060.06:526:14Waning Gibbous10Tue
11Wed11:253.611:572.84:260.06:130.36:536:12Waning Gibbous11Wed
12Thu12:253.25:140.37:300.66:546:10Third Quarter12Thu
13Fri12:592.61:322.96:180.68:400.76:556:09Third Quarter13Fri
14Sat2:042.52:432.88:090.89:430.76:566:07Third Quarter14Sat
15Sun3:132.43:552.79:340.810:360.76:586:06Third Quarter15Sun
16Mon4:202.54:552.710:370.711:190.66:596:04Waning Crescent16Mon
17Tue5:152.75:412.711:250.611:540.57:006:03Waning Crescent17Tue
18Wed6:002.96:202.812:070.57:016:01Waning Crescent18Wed
19Thu6:383.16:532.812:240.412:440.47:026:00Waning Crescent19Thu
20Fri7:113.27:242.912:500.31:200.37:035:58New Moon20Fri
21Sat7:423.37:542.91:140.21:550.27:045:57New Moon21Sat
22Sun8:133.48:262.81:380.22:280.17:055:55New Moon22Sun
23Mon8:443.49:002.82:050.13:000.27:075:54New Moon23Mon
24Tue9:183.39:372.72:360.23:320.37:085:52Waxing Crescent24Tue
25Wed9:553.310:182.63:100.24:060.47:095:51Waxing Crescent25Wed
26Thu10:383.111:042.53:470.34:450.57:105:50Waxing Crescent26Thu
27Fri11:273.011:582.44:290.45:360.67:115:48Waxing Crescent27Fri
28Sat12:252.95:200.56:490.77:125:47First Quarter28Sat
29Sun12:582.412:272.95:250.67:220.66:144:46First Quarter29Sun
30Mon1:032.51:332.96:480.68:280.46:154:44First Quarter30Mon
31Tue2:112.72:413.08:290.59:200.26:164:43Waxing Gibbous31Tue
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 4:27 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 spring phase. Tonight's moon is 95% 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 (95% 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