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 2h 01m 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 - Jun 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:433.28:084.01:52-0.31:27-0.35:158:12Full Moon1Sat
2Sun8:333.38:584.12:40-0.42:16-0.45:158:13Full Moon2Sun
3Mon9:243.49:494.03:27-0.43:07-0.45:148:14Waning Gibbous3Mon
4Tue10:163.410:413.94:15-0.43:59-0.35:148:15Waning Gibbous4Tue
5Wed11:113.311:363.75:06-0.34:56-0.15:148:15Waning Gibbous5Wed
6Thu12:083.36:04-0.26:080.15:138:16Waning Gibbous6Thu
7Fri12:343.41:083.37:07-0.17:380.25:138:16Third Quarter7Fri
8Sat1:323.22:083.28:060.08:540.35:138:17Third Quarter8Sat
9Sun2:333.03:113.29:030.110:030.35:138:18Third Quarter9Sun
10Mon3:362.84:163.39:570.211:040.35:138:18Waning Crescent10Mon
11Tue4:402.75:163.310:480.211:580.35:128:19Waning Crescent11Tue
12Wed5:382.76:083.411:340.25:128:19Waning Crescent12Wed
13Thu6:292.86:553.412:470.212:150.25:128:20Waning Crescent13Thu
14Fri7:162.87:383.41:320.212:530.25:128:20New Moon14Fri
15Sat8:002.98:193.42:130.21:300.25:128:20New Moon15Sat
16Sun8:422.98:563.32:500.12:060.25:128:21New Moon16Sun
17Mon9:222.99:313.23:250.22:430.25:128:21New Moon17Mon
18Tue10:012.810:053.13:570.23:210.35:138:21Waxing Crescent18Tue
19Wed10:402.710:403.04:270.33:590.45:138:22Waxing Crescent19Wed
20Thu11:192.711:172.94:560.34:400.55:138:22Waxing Crescent20Thu
21Fri12:002.65:270.45:250.65:138:22Waxing Crescent21Fri
22Sat12:432.66:050.56:170.75:138:22First Quarter22Sat
23Sun12:422.61:272.76:470.57:170.75:148:22First Quarter23Sun
24Mon1:312.62:162.87:340.58:240.75:148:23First Quarter24Mon
25Tue2:242.53:102.98:250.49:410.65:148:23First Quarter25Tue
26Wed3:242.54:103.19:200.310:510.45:158:23Waxing Gibbous26Wed
27Thu4:302.65:103.410:190.211:490.25:158:23Waxing Gibbous27Thu
28Fri5:322.86:053.711:180.05:168:23Waxing Gibbous28Fri
29Sat6:293.06:583.912:420.012:14-0.25:168:23Full Moon29Sat
30Sun7:233.37:504.11:34-0.31:09-0.35:168:23Full Moon30Sun
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