Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 13, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 5h 35m at 12:56 pm (-0.3 ft)
Next high tide : 7:38 pm (4.0 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:25 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:563.01:152.77:300.17:46-0.17:114:28Third Quarter1Sun
2Mon2:013.02:212.58:490.18:51-0.17:114:29Third Quarter2Mon
3Tue3:083.13:312.59:560.09:51-0.27:114:30Waning Crescent3Tue
4Wed4:123.24:342.510:53-0.110:44-0.27:114:31Waning Crescent4Wed
5Thu5:083.35:282.611:44-0.211:32-0.37:114:32Waning Crescent5Thu
6Fri5:583.46:172.712:31-0.37:114:33New Moon6Fri
7Sat6:443.47:032.812:17-0.31:14-0.37:114:34New Moon7Sat
8Sun7:283.37:462.812:58-0.31:52-0.47:114:35New Moon8Sun
9Mon8:093.28:272.81:35-0.32:26-0.37:104:36New Moon9Mon
10Tue8:483.19:072.72:07-0.22:57-0.27:104:37Waxing Crescent10Tue
11Wed9:252.99:462.62:39-0.13:24-0.27:104:38Waxing Crescent11Wed
12Thu10:022.710:262.43:130.03:530.07:104:39Waxing Crescent12Thu
13Fri10:402.511:062.33:520.24:270.17:094:40Waxing Crescent13Fri
14Sat11:212.311:482.34:370.45:070.27:094:41First Quarter14Sat
15Sun12:052.15:320.55:530.37:084:42First Quarter15Sun
16Mon12:332.212:542.06:450.66:430.37:084:44First Quarter16Mon
17Tue1:232.31:501.98:300.57:380.37:074:45First Quarter17Tue
18Wed2:212.42:562.09:400.48:390.27:074:46Waxing Gibbous18Wed
19Thu3:262.54:002.110:340.29:410.07:064:47Waxing Gibbous19Thu
20Fri4:242.84:542.311:210.010:36-0.27:064:48Waxing Gibbous20Fri
21Sat5:153.15:432.612:04-0.27:054:49Waxing Gibbous21Sat
22Sun6:033.36:302.812:47-0.47:044:51Full Moon22Sun
23Mon6:503.57:173.012:15-0.61:27-0.67:044:52Full Moon23Mon
24Tue7:373.68:053.21:05-0.72:07-0.77:034:53Full Moon24Tue
25Wed8:243.68:533.31:54-0.82:46-0.77:024:54Waning Gibbous25Wed
26Thu9:133.59:433.32:42-0.83:26-0.77:014:56Waning Gibbous26Thu
27Fri10:033.310:373.33:33-0.64:08-0.67:004:57Waning Gibbous27Fri
28Sat10:563.011:333.24:32-0.44:57-0.46:594:58Waning Gibbous28Sat
29Sun11:532.85:48-0.25:56-0.36:594:59Third Quarter29Sun
30Mon12:333.112:532.57:150.07:06-0.16:585:01Third Quarter30Mon
31Tue1:373.01:592.38:330.08:240.06:575:02Third Quarter31Tue
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 4:17 pm — 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 1% 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 New Moon (1% 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