Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 31m at 7:43 am (0.2 ft)
Next high tide : 2:30 pm (3.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:21 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Aug 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:573.15:130.25:500.65:418:03Third Quarter1Thu
2Fri12:172.712:463.15:560.26:510.75:428:02Third Quarter2Fri
3Sat1:102.61:403.26:470.38:090.75:438:01Third Quarter3Sat
4Sun2:082.62:413.27:460.39:470.65:448:00Third Quarter4Sun
5Mon3:152.63:513.38:530.311:000.45:457:59Waning Crescent5Mon
6Tue4:272.75:023.510:080.211:590.25:467:57Waning Crescent6Tue
7Wed5:342.96:053.711:220.05:477:56Waning Crescent7Wed
8Thu6:333.27:013.912:510.012:27-0.25:487:55New Moon8Thu
9Fri7:273.57:524.01:40-0.21:27-0.35:497:54New Moon9Fri
10Sat8:193.78:424.02:25-0.42:22-0.45:507:52New Moon10Sat
11Sun9:083.89:293.83:08-0.43:14-0.45:517:51New Moon11Sun
12Mon9:573.910:153.63:46-0.44:03-0.25:527:50Waxing Crescent12Mon
13Tue10:453.811:023.34:22-0.24:530.05:537:48Waxing Crescent13Tue
14Wed11:343.611:493.04:550.05:460.35:547:47Waxing Crescent14Wed
15Thu12:253.35:280.26:490.55:557:46First Quarter15Thu
16Fri12:392.71:183.16:070.47:580.75:567:44First Quarter16Fri
17Sat1:312.42:142.96:540.69:050.95:577:43First Quarter17Sat
18Sun2:282.33:202.77:530.810:090.95:587:41First Quarter18Sun
19Mon3:372.24:312.79:170.811:050.85:597:40Waxing Gibbous19Mon
20Tue4:482.25:302.810:390.811:520.76:007:39Waxing Gibbous20Tue
21Wed5:432.46:162.911:340.76:017:37Waxing Gibbous21Wed
22Thu6:272.56:543.012:330.612:200.56:027:36Waxing Gibbous22Thu
23Fri7:052.77:283.21:110.41:010.46:037:34Full Moon23Fri
24Sat7:402.98:003.21:450.31:410.36:047:32Full Moon24Sat
25Sun8:143.18:323.22:140.22:180.26:057:31Full Moon25Sun
26Mon8:483.29:053.22:390.12:530.26:067:29Full Moon26Mon
27Tue9:243.39:423.13:030.13:270.26:077:28Waning Gibbous27Tue
28Wed10:023.410:213.03:310.04:020.36:087:26Waning Gibbous28Wed
29Thu10:433.411:052.94:030.14:410.46:097:25Waning Gibbous29Thu
30Fri11:293.411:562.84:410.15:290.56:107:23Waning Gibbous30Fri
31Sat12:213.35:260.26:310.66:117:21Third Quarter31Sat
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 11:06 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 neap phase. Tonight's moon is 41% 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 Third Quarter (41% 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