Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 1h 37m at 8:29 am (0.3 ft)
Next high tide : 2:47 pm (3.1 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:13 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Jan 2014

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:003.97:243.312:23-0.71:31-0.87:114:28New Moon1Wed
2Thu7:514.08:153.41:17-0.82:17-0.97:114:29New Moon2Thu
3Fri8:423.99:073.42:10-0.83:03-0.87:114:29Waxing Crescent3Fri
4Sat9:333.710:003.33:03-0.73:49-0.77:114:30Waxing Crescent4Sat
5Sun10:253.410:553.24:00-0.54:38-0.57:114:31Waxing Crescent5Sun
6Mon11:213.011:533.05:11-0.25:33-0.37:114:32First Quarter6Mon
7Tue12:182.76:330.06:33-0.17:114:33First Quarter7Tue
8Wed12:532.91:172.47:470.27:330.07:114:34First Quarter8Wed
9Thu1:572.82:222.28:550.28:340.17:114:35First Quarter9Thu
10Fri3:052.73:292.29:560.29:330.27:114:36Waxing Gibbous10Fri
11Sat4:082.74:282.210:490.210:230.17:104:37Waxing Gibbous11Sat
12Sun5:012.75:182.311:340.111:070.17:104:38Waxing Gibbous12Sun
13Mon5:462.86:022.412:150.07:104:39Waxing Gibbous13Mon
14Tue6:262.96:422.512:53-0.17:094:41Full Moon14Tue
15Wed7:022.97:202.612:22-0.11:27-0.17:094:42Full Moon15Wed
16Thu7:352.97:552.612:57-0.21:59-0.27:084:43Full Moon16Thu
17Fri8:052.98:292.61:32-0.22:26-0.27:084:44Full Moon17Fri
18Sat8:362.89:032.62:06-0.22:49-0.27:074:45Waning Gibbous18Sat
19Sun9:082.79:392.62:40-0.13:11-0.17:074:46Waning Gibbous19Sun
20Mon9:442.610:172.53:160.03:39-0.17:064:48Waning Gibbous20Mon
21Tue10:242.511:002.53:560.14:140.07:064:49Waning Gibbous21Tue
22Wed11:102.411:482.54:420.24:560.07:054:50Third Quarter22Wed
23Thu12:022.35:380.35:470.17:044:51Third Quarter23Thu
24Fri12:412.612:592.26:460.36:450.07:034:52Third Quarter24Fri
25Sat1:412.72:052.28:150.27:520.07:034:54Third Quarter25Sat
26Sun2:492.83:172.39:430.19:07-0.27:024:55Waning Crescent26Sun
27Mon3:583.14:252.610:44-0.210:20-0.47:014:56Waning Crescent27Mon
28Tue4:593.45:232.911:37-0.511:23-0.67:004:57Waning Crescent28Tue
29Wed5:543.66:173.212:27-0.76:594:59New Moon29Wed
30Thu6:463.87:093.412:20-0.81:14-0.96:585:00New Moon30Thu
31Fri7:363.97:593.51:15-0.91:59-1.06:575:01New Moon31Fri
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 11:38 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 58% 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 First Quarter (58% 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