Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Block Island, RI.
Next low tide (tomorrow) : 6:07 am (0.3 ft)
Next high tide (tomorrow) : in 5h 12m at 12:12 am (2.8 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Sep 2060

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:192.85:230.66:220.86:137:18First Quarter1Wed
2Thu12:352.31:032.76:060.77:300.96:147:16First Quarter2Thu
3Fri1:242.21:552.76:580.89:091.06:157:14First Quarter3Fri
4Sat2:212.12:592.77:590.810:250.96:167:13First Quarter4Sat
5Sun3:292.24:142.89:120.811:190.76:177:11Waxing Gibbous5Sun
6Mon4:412.45:193.110:310.66:187:09Waxing Gibbous6Mon
7Tue5:392.66:093.312:040.511:36 AM0.46:197:08Waxing Gibbous7Tue
8Wed6:293.06:553.612:440.212:290.16:207:06Waxing Gibbous8Wed
9Thu7:153.37:403.71:210.01:20-0.16:217:04Full Moon9Thu
10Fri8:013.78:263.81:57-0.22:10-0.36:227:03Full Moon10Fri
11Sat8:473.99:123.72:33-0.42:59-0.36:237:01Full Moon11Sat
12Sun9:344.09:593.63:09-0.43:48-0.36:246:59Waning Gibbous12Sun
13Mon10:234.010:493.33:47-0.44:40-0.16:256:58Waning Gibbous13Mon
14Tue11:143.911:433.14:27-0.25:430.16:266:56Waning Gibbous14Tue
15Wed12:113.75:130.07:040.36:276:54Third Quarter15Wed
16Thu12:422.81:133.56:080.28:240.56:286:52Third Quarter16Thu
17Fri1:452.72:223.27:220.49:370.56:296:51Third Quarter17Fri
18Sat2:542.63:383.19:030.510:410.56:306:49Third Quarter18Sat
19Sun4:072.64:513.110:270.511:350.56:316:47Waning Crescent19Sun
20Mon5:122.85:483.111:290.46:326:46Waning Crescent20Mon
21Tue6:063.06:353.212:200.412:190.36:336:44Waning Crescent21Tue
22Wed6:523.27:153.212:590.31:020.36:346:42Waning Crescent22Wed
23Thu7:333.37:523.21:330.21:400.26:356:40New Moon23Thu
24Fri8:113.48:253.22:010.12:140.26:366:39New Moon24Fri
25Sat8:463.48:573.12:240.12:450.26:376:37New Moon25Sat
26Sun9:193.49:293.02:450.13:150.26:386:35New Moon26Sun
27Mon9:503.310:012.83:080.23:460.36:396:34Waxing Crescent27Mon
28Tue10:213.110:362.63:360.34:190.56:406:32Waxing Crescent28Tue
29Wed10:553.011:152.54:070.54:560.66:416:30Waxing Crescent29Wed
30Thu11:352.94:440.65:410.86:426:28Waxing Crescent30Thu
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 3:09 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 transitional phase. Tonight's moon is 72% 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 Waning Gibbous (72% 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