Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 3h 09m at 6:38 pm (0.7 ft)
Next high tide (tomorrow) : 1:01 am (2.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:20 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Oct 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:283.48:473.01:560.12:410.26:436:28Full Moon1Fri
2Sat8:583.39:202.92:230.13:100.36:446:26Full Moon2Sat
3Sun9:303.39:542.82:540.23:390.46:456:25Waning Gibbous3Sun
4Mon10:043.210:322.73:260.34:100.56:466:23Waning Gibbous4Mon
5Tue10:423.111:152.64:020.44:460.66:476:21Waning Gibbous5Tue
6Wed11:273.04:420.55:310.76:486:20Waning Gibbous6Wed
7Thu12:042.512:192.95:290.66:330.86:496:18Third Quarter7Thu
8Fri1:002.51:172.96:280.78:080.86:506:16Third Quarter8Fri
9Sat2:012.52:202.97:380.79:290.66:516:15Third Quarter9Sat
10Sun3:052.73:273.08:590.510:240.46:526:13Waning Crescent10Sun
11Mon4:123.04:353.210:220.311:100.16:536:12Waning Crescent11Mon
12Tue5:123.45:343.411:280.011:53-0.16:546:10Waning Crescent12Tue
13Wed6:053.76:273.612:23-0.26:566:08Waning Crescent13Wed
14Thu6:564.17:183.712:35-0.31:16-0.46:576:07New Moon14Thu
15Fri7:454.38:083.71:18-0.52:08-0.56:586:05New Moon15Fri
16Sat8:344.48:583.62:01-0.52:59-0.56:596:04New Moon16Sat
17Sun9:244.39:483.42:46-0.53:49-0.47:006:02Waxing Crescent17Sun
18Mon10:164.110:403.23:30-0.34:41-0.27:016:01Waxing Crescent18Mon
19Tue11:103.811:353.04:17-0.15:410.17:025:59Waxing Crescent19Tue
20Wed12:083.45:090.26:520.37:035:58First Quarter20Wed
21Thu12:352.81:113.16:260.58:010.57:045:56First Quarter21Thu
22Fri1:392.72:152.98:080.69:010.67:065:55First Quarter22Fri
23Sat2:442.63:202.79:220.79:550.67:075:54First Quarter23Sat
24Sun3:492.74:222.710:230.610:410.57:085:52Waxing Gibbous24Sun
25Mon4:492.85:142.711:140.611:200.57:095:51Waxing Gibbous25Mon
26Tue5:372.95:582.711:580.511:530.47:105:49Waxing Gibbous26Tue
27Wed6:183.16:362.812:360.47:115:48Waxing Gibbous27Wed
28Thu6:533.27:112.812:220.31:130.37:135:47Full Moon28Thu
29Fri7:253.37:452.812:490.21:490.27:145:45Full Moon29Fri
30Sat7:563.38:182.81:190.12:230.27:155:44Full Moon30Sat
31Sun7:283.37:532.81:500.11:550.26:164:43Full Moon31Sun
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 9:49 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 62% 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 Third Quarter (62% 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