Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 15m at 11:53 am (-0.1 ft)
Next high tide : 6:42 pm (3.9 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Dec 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:272.910:042.32:450.23:450.46:524:18Waning Gibbous1Sun
2Mon10:132.810:552.33:270.34:290.46:534:18Waning Gibbous2Mon
3Tue11:042.711:502.34:160.45:250.56:544:17Third Quarter3Tue
4Wed12:002.75:170.56:290.46:554:17Third Quarter4Wed
5Thu12:482.512:582.66:320.57:280.36:564:17Third Quarter5Thu
6Fri1:482.72:012.67:590.48:240.16:574:17Third Quarter6Fri
7Sat2:503.03:082.79:200.29:18-0.16:584:17Waning Crescent7Sat
8Sun3:503.34:112.810:24-0.110:09-0.36:594:17Waning Crescent8Sun
9Mon4:463.65:092.911:20-0.310:58-0.47:004:17Waning Crescent9Mon
10Tue5:383.96:023.012:13-0.57:004:17New Moon10Tue
11Wed6:294.06:543.11:05-0.67:014:17New Moon11Wed
12Thu7:214.17:453.112:37-0.61:56-0.67:024:17New Moon12Thu
13Fri8:124.08:363.01:28-0.62:45-0.57:034:17Waxing Crescent13Fri
14Sat9:043.79:282.92:19-0.53:34-0.47:044:18Waxing Crescent14Sat
15Sun9:573.410:222.83:10-0.34:27-0.27:044:18Waxing Crescent15Sun
16Mon10:523.111:202.74:050.05:240.07:054:18Waxing Crescent16Mon
17Tue11:482.85:190.26:220.27:064:19First Quarter17Tue
18Wed12:182.612:432.56:450.47:140.37:064:19First Quarter18Wed
19Thu1:172.51:392.37:560.58:000.37:074:19First Quarter19Thu
20Fri2:172.52:382.28:590.58:430.37:074:20First Quarter20Fri
21Sat3:162.63:372.19:540.59:220.37:084:20Waxing Gibbous21Sat
22Sun4:092.64:292.110:420.410:000.37:084:21Waxing Gibbous22Sun
23Mon4:532.75:132.211:240.310:380.27:094:21Waxing Gibbous23Mon
24Tue5:322.85:522.312:050.27:094:22Waxing Gibbous24Tue
25Wed6:072.96:292.312:440.17:104:22Full Moon25Wed
26Thu6:423.07:062.41:230.07:104:23Full Moon26Thu
27Fri7:173.07:432.512:34-0.11:590.07:104:24Full Moon27Fri
28Sat7:543.08:212.51:14-0.12:320.07:114:24Full Moon28Sat
29Sun8:323.09:012.51:53-0.13:010.07:114:25Waning Gibbous29Sun
30Mon9:123.09:452.52:33-0.13:310.07:114:26Waning Gibbous30Mon
31Tue9:552.910:322.53:150.04:050.07:114:27Waning Gibbous31Tue
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 3:17 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 spring phase. Tonight's moon is 5% 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 maximum.

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 Crescent (5% illuminated). This places Block Island, RI in a spring tide cycle, so tidal ranges are near their weekly maximum 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