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 4h 16m 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 - Mar 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:213.37:403.41:15-0.61:34-0.66:205:36New Moon1Wed
2Thu8:033.28:223.31:56-0.52:05-0.66:195:37New Moon2Thu
3Fri8:433.19:013.22:32-0.42:32-0.56:175:38Waxing Crescent3Fri
4Sat9:222.99:393.03:04-0.32:57-0.36:165:40Waxing Crescent4Sat
5Sun10:002.610:172.83:34-0.13:26-0.26:145:41Waxing Crescent5Sun
6Mon10:412.410:562.64:060.14:000.06:125:42Waxing Crescent6Mon
7Tue11:242.211:382.44:460.34:410.26:115:43First Quarter7Tue
8Wed12:122.05:430.55:300.46:095:44First Quarter8Wed
9Thu12:252.21:051.97:380.66:290.56:085:45First Quarter9Thu
10Fri1:232.22:111.98:570.67:420.56:065:46First Quarter10Fri
11Sat2:382.23:262.09:550.59:150.46:045:47Waxing Gibbous11Sat
12Sun3:552.34:242.210:420.310:220.26:035:49Waxing Gibbous12Sun
13Mon4:452.55:082.511:210.111:110.06:015:50Waxing Gibbous13Mon
14Tue5:262.75:482.811:56-0.111:55-0.25:595:51Waxing Gibbous14Tue
15Wed6:053.06:283.112:28-0.35:585:52Full Moon15Wed
16Thu6:453.17:093.412:38-0.412:58-0.55:565:53Full Moon16Thu
17Fri7:273.27:513.61:19-0.61:29-0.65:545:54Full Moon17Fri
18Sat8:103.28:353.62:01-0.62:03-0.65:535:55Full Moon18Sat
19Sun8:563.29:223.62:43-0.62:41-0.65:515:56Waning Gibbous19Sun
20Mon9:443.010:123.53:27-0.53:22-0.55:495:57Waning Gibbous20Mon
21Tue10:362.911:083.34:18-0.34:09-0.35:485:58Waning Gibbous21Tue
22Wed11:342.75:25-0.15:06-0.15:466:00Third Quarter22Wed
23Thu12:083.112:362.66:550.16:220.15:446:01Third Quarter23Thu
24Fri1:143.01:442.58:130.18:140.15:436:02Third Quarter24Fri
25Sat2:272.92:582.69:200.19:370.15:416:03Waning Crescent25Sat
26Sun3:392.94:062.810:170.010:39-0.15:396:04Waning Crescent26Sun
27Mon4:403.05:033.011:06-0.111:32-0.25:386:05Waning Crescent27Mon
28Tue5:313.05:523.211:49-0.25:366:06Waning Crescent28Tue
29Wed6:173.16:373.312:19-0.312:27-0.35:346:07New Moon29Wed
30Thu6:593.17:183.41:02-0.31:00-0.35:336:08New Moon30Thu
31Fri7:393.17:563.31:40-0.31:28-0.35:316:09New 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 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