Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 5:28 am (0.3 ft)
Next high tide : in 5h 16m at 11:27 pm (2.9 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 2058

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:023.48:272.81:11-0.12:30-0.16:524:18Full Moon1Sun
2Mon8:413.29:092.61:470.03:040.16:534:18Waning Gibbous2Mon
3Tue9:203.09:532.52:240.13:390.26:544:17Waning Gibbous3Tue
4Wed10:002.810:392.33:030.34:190.46:554:17Waning Gibbous4Wed
5Thu10:442.611:292.23:460.45:170.56:564:17Waning Gibbous5Thu
6Fri11:302.44:350.66:280.66:574:17Third Quarter6Fri
7Sat12:212.212:202.35:380.77:240.66:584:17Third Quarter7Sat
8Sun1:132.21:112.27:010.78:100.56:594:17Third Quarter8Sun
9Mon2:072.32:082.28:290.78:500.47:004:17Third Quarter9Mon
10Tue3:022.53:092.29:340.59:270.37:014:17Waning Crescent10Tue
11Wed3:522.74:052.310:260.310:030.17:014:17Waning Crescent11Wed
12Thu4:373.04:542.511:110.110:420.07:024:17Waning Crescent12Thu
13Fri5:203.35:402.611:55-0.111:23-0.27:034:17Waning Crescent13Fri
14Sat6:043.56:262.812:39-0.37:044:18New Moon14Sat
15Sun6:503.77:132.912:06-0.41:23-0.47:044:18New Moon15Sun
16Mon7:383.88:013.012:52-0.52:08-0.57:054:18New Moon16Mon
17Tue8:273.88:523.01:41-0.52:53-0.47:064:18Waxing Crescent17Tue
18Wed9:183.79:442.92:30-0.53:42-0.47:064:19Waxing Crescent18Wed
19Thu10:123.510:412.93:23-0.34:37-0.37:074:19Waxing Crescent19Thu
20Fri11:093.211:412.94:24-0.15:40-0.27:074:20First Quarter20Fri
21Sat12:093.05:500.06:43-0.17:084:20First Quarter21Sat
22Sun12:432.91:102.87:240.17:41-0.17:084:21First Quarter22Sun
23Mon1:472.92:142.68:410.18:370.07:094:21First Quarter23Mon
24Tue2:533.03:202.59:470.19:30-0.17:094:22Waxing Gibbous24Tue
25Wed3:563.14:202.410:440.010:18-0.17:104:22Waxing Gibbous25Wed
26Thu4:513.25:132.511:340.011:01-0.17:104:23Waxing Gibbous26Thu
27Fri5:403.26:002.512:20-0.17:104:24Waxing Gibbous27Fri
28Sat6:243.26:452.61:02-0.17:104:25Full Moon28Sat
29Sun7:063.27:272.612:19-0.11:40-0.17:114:25Full Moon29Sun
30Mon7:453.18:082.612:56-0.12:15-0.17:114:26Full Moon30Mon
31Tue8:223.08:472.51:32-0.12:47-0.17:114:27Full Moon31Tue
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 2:27 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 81% 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 Waning Gibbous (81% 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