Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 0m at 5:28 am (0.3 ft)
Next high tide : 11:59 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Apr 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:422.76:022.911:590.05:286:11Waxing Gibbous1Mon
2Tue6:172.86:373.212:14-0.112:27-0.15:266:12Full Moon2Tue
3Wed6:533.07:143.412:53-0.312:54-0.35:256:13Full Moon3Wed
4Thu7:313.07:533.51:30-0.31:24-0.35:236:14Full Moon4Thu
5Fri8:123.08:343.52:06-0.41:57-0.45:216:15Full Moon5Fri
6Sat8:553.09:193.52:43-0.32:35-0.35:206:16Waning Gibbous6Sat
7Sun10:422.911:073.44:24-0.34:16-0.36:187:17Waning Gibbous7Sun
8Mon11:342.85:10-0.15:04-0.16:177:19Waning Gibbous8Mon
9Tue12:013.312:312.76:100.06:000.06:157:20Third Quarter9Tue
10Wed1:013.11:322.77:330.17:130.26:137:21Third Quarter10Wed
11Thu2:053.02:392.78:570.18:580.26:127:22Third Quarter11Thu
12Fri3:143.03:502.810:050.010:290.16:107:23Third Quarter12Fri
13Sat4:263.04:583.111:02-0.111:33-0.16:097:24Waning Crescent13Sat
14Sun5:293.15:563.311:52-0.26:077:25Waning Crescent14Sun
15Mon6:233.26:473.512:28-0.212:37-0.36:057:26Waning Crescent15Mon
16Tue7:123.27:343.71:18-0.31:18-0.46:047:27New Moon16Tue
17Wed7:583.28:193.72:05-0.41:55-0.46:027:28New Moon17Wed
18Thu8:423.29:013.62:48-0.42:29-0.36:017:29New Moon18Thu
19Fri9:253.19:423.53:27-0.33:00-0.25:597:30New Moon19Fri
20Sat10:072.910:213.24:02-0.13:31-0.15:587:31Waxing Crescent20Sat
21Sun10:502.711:003.04:350.04:050.15:567:32Waxing Crescent21Sun
22Mon11:342.611:422.85:090.24:430.35:557:34Waxing Crescent22Mon
23Tue12:212.45:520.45:270.55:537:35Waxing Crescent23Tue
24Wed12:262.61:112.37:030.66:210.65:527:36First Quarter24Wed
25Thu1:142.42:042.28:190.67:270.75:517:37First Quarter25Thu
26Fri2:062.33:012.29:200.68:520.75:497:38First Quarter26Fri
27Sat3:072.34:042.410:120.610:170.65:487:39First Quarter27Sat
28Sun4:142.34:582.610:550.511:150.45:477:40Waxing Gibbous28Sun
29Mon5:102.55:422.911:320.35:457:41Waxing Gibbous29Mon
30Tue5:562.66:233.212:020.212:050.15:447:42Waxing Gibbous30Tue
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 8:43 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 72% 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 Waning Gibbous (72% 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