Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 46m at 8:40 am (0.7 ft)
Next high tide : 4:05 pm (2.8 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:33 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:533.19:132.72:15-0.23:08-0.27:114:28Waxing Crescent1Thu
2Fri9:322.99:552.62:500.03:39-0.17:114:29Waxing Crescent2Fri
3Sat10:102.710:362.53:260.14:070.07:114:30Waxing Crescent3Sat
4Sun10:492.511:182.44:050.34:390.17:114:31Waxing Crescent4Sun
5Mon11:302.34:530.45:150.27:114:32First Quarter5Mon
6Tue12:002.312:122.15:550.65:570.37:114:33First Quarter6Tue
7Wed12:422.31:001.97:200.66:430.37:114:34First Quarter7Wed
8Thu1:302.31:561.88:450.67:360.47:114:35First Quarter8Thu
9Fri2:272.43:041.89:510.58:350.37:104:36Waxing Gibbous9Fri
10Sat3:332.54:091.910:440.39:370.27:104:37Waxing Gibbous10Sat
11Sun4:312.75:012.111:310.110:340.07:104:38Waxing Gibbous11Sun
12Mon5:212.95:472.312:150.07:104:39Waxing Gibbous12Mon
13Tue6:083.26:332.612:57-0.27:094:40Full Moon13Tue
14Wed6:533.47:182.812:15-0.41:36-0.47:094:41Full Moon14Wed
15Thu7:383.58:043.01:04-0.52:13-0.57:084:42Full Moon15Thu
16Fri8:233.58:513.11:52-0.62:48-0.67:084:43Waning Gibbous16Fri
17Sat9:093.49:403.22:40-0.63:23-0.67:074:44Waning Gibbous17Sat
18Sun9:573.210:323.23:30-0.54:01-0.57:074:46Waning Gibbous18Sun
19Mon10:482.911:263.24:27-0.34:43-0.47:064:47Waning Gibbous19Mon
20Tue11:432.65:38-0.15:32-0.37:064:48Third Quarter20Tue
21Wed12:243.112:422.37:050.16:30-0.17:054:49Third Quarter21Wed
22Thu1:263.01:462.28:260.17:400.07:044:50Third Quarter22Thu
23Fri2:362.93:002.19:380.19:080.07:044:52Waning Crescent23Fri
24Sat3:492.94:122.210:390.110:210.07:034:53Waning Crescent24Sat
25Sun4:523.05:112.311:320.011:19-0.17:024:54Waning Crescent25Sun
26Mon5:453.06:012.512:19-0.17:014:55Waning Crescent26Mon
27Tue6:323.16:472.612:09-0.21:01-0.27:004:57New Moon27Tue
28Wed7:153.17:302.712:53-0.31:37-0.37:004:58New Moon28Wed
29Thu7:533.18:102.81:31-0.32:09-0.36:594:59New Moon29Thu
30Fri8:293.08:462.82:04-0.22:35-0.36:585:00New Moon30Fri
31Sat9:022.89:212.72:34-0.22:58-0.36:575:02Waxing Crescent31Sat
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 12:22 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 transitional phase. Tonight's moon is 71% 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 Waxing Gibbous (71% 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