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 : in 5m at 12:51 am (0.5 ft)
Next high tide : 6:39 am (2.3 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 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:443.74:450.06:360.36:426:29Waning Gibbous1Mon
2Tue12:162.812:483.45:410.27:570.56:436:27Third Quarter2Tue
3Wed1:212.71:573.27:010.59:090.56:446:25Third Quarter3Wed
4Thu2:292.63:123.08:490.610:120.56:456:24Third Quarter4Thu
5Fri3:412.74:243.010:090.511:050.56:466:22Waning Crescent5Fri
6Sat4:472.85:223.011:110.511:490.46:486:20Waning Crescent6Sat
7Sun5:423.06:093.012:000.46:496:19Waning Crescent7Sun
8Mon6:283.26:483.012:260.312:430.36:506:17Waning Crescent8Mon
9Tue7:083.47:253.012:580.21:200.26:516:16New Moon9Tue
10Wed7:453.47:583.01:240.21:540.26:526:14New Moon10Wed
11Thu8:193.58:312.91:460.12:260.26:536:12New Moon11Thu
12Fri8:503.49:032.92:090.12:560.26:546:11New Moon12Fri
13Sat9:213.39:362.72:360.23:260.36:556:09Waxing Crescent13Sat
14Sun9:533.210:112.63:070.33:570.46:566:08Waxing Crescent14Sun
15Mon10:283.010:502.43:400.44:320.66:576:06Waxing Crescent15Mon
16Tue11:082.911:352.34:170.65:150.76:586:04Waxing Crescent16Tue
17Wed11:572.74:590.76:120.96:596:03First Quarter17Wed
18Thu12:282.212:542.75:510.87:520.97:016:01First Quarter18Thu
19Fri1:272.21:562.76:580.99:110.87:026:00First Quarter19Fri
20Sat2:312.33:012.88:210.810:030.67:035:58First Quarter20Sat
21Sun3:382.64:082.99:540.610:460.37:045:57Waxing Gibbous21Sun
22Mon4:402.95:073.111:030.311:240.17:055:56Waxing Gibbous22Mon
23Tue5:343.35:593.311:570.07:065:54Waxing Gibbous23Tue
24Wed6:223.76:483.412:02-0.212:48-0.27:075:53Full Moon24Wed
25Thu7:104.17:373.512:41-0.41:38-0.47:095:51Full Moon25Thu
26Fri7:574.38:263.51:23-0.52:29-0.57:105:50Full Moon26Fri
27Sat8:464.39:163.42:07-0.53:19-0.47:115:49Full Moon27Sat
28Sun9:374.210:073.22:52-0.44:11-0.37:125:47Waning Gibbous28Sun
29Mon10:303.911:023.03:39-0.35:090.07:135:46Waning Gibbous29Mon
30Tue11:283.64:300.06:210.27:145:45Waning Gibbous30Tue
31Wed12:012.812:323.35:300.27:350.47:165:43Third Quarter31Wed
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 3:45 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