Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently falling in Block Island, RI.
Next low tide : in 43m at 3:53 pm (-0.3 ft)
Next high tide : 10:30 pm (3.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (9% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - May 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:073.310:273.74:11-0.53:45-0.35:437:43Waxing Crescent1Sun
2Mon10:583.111:183.45:01-0.34:28-0.15:417:44Waxing Crescent2Mon
3Tue11:512.95:560.05:150.25:407:45Waxing Crescent3Tue
4Wed12:113.112:472.76:580.26:150.45:397:46First Quarter4Wed
5Thu1:072.81:442.67:580.47:410.65:387:47First Quarter5Thu
6Fri2:042.62:442.58:540.58:590.75:367:48First Quarter6Fri
7Sat3:042.43:452.59:450.510:030.75:357:49First Quarter7Sat
8Sun4:082.44:432.610:310.510:580.65:347:51Waxing Gibbous8Sun
9Mon5:042.45:322.811:110.411:440.55:337:52Waxing Gibbous9Mon
10Tue5:502.46:132.911:460.45:327:53Waxing Gibbous10Tue
11Wed6:292.56:503.112:270.312:180.35:317:54Waxing Gibbous11Wed
12Thu7:042.67:243.21:080.212:490.25:307:55Full Moon12Thu
13Fri7:392.77:583.31:480.11:210.15:297:56Full Moon13Fri
14Sat8:152.88:333.42:250.01:540.15:287:57Full Moon14Sat
15Sun8:532.89:113.43:000.02:300.05:277:58Full Moon15Sun
16Mon9:332.89:513.43:330.03:080.15:267:59Waning Gibbous16Mon
17Tue10:162.810:353.34:060.13:480.15:258:00Waning Gibbous17Tue
18Wed11:032.811:233.24:430.14:320.25:248:00Waning Gibbous18Wed
19Thu11:552.85:280.25:240.35:238:01Waning Gibbous19Thu
20Fri12:163.112:512.96:220.26:260.45:228:02Third Quarter20Fri
21Sat1:133.01:493.07:240.27:440.45:228:03Third Quarter21Sat
22Sun2:123.02:513.18:280.19:210.35:218:04Third Quarter22Sun
23Mon3:173.03:563.39:320.010:410.25:208:05Waning Crescent23Mon
24Tue4:253.05:003.510:33-0.111:430.05:198:06Waning Crescent24Tue
25Wed5:283.15:583.811:27-0.25:198:07Waning Crescent25Wed
26Thu6:253.26:513.912:39-0.212:18-0.35:188:08Waning Crescent26Thu
27Fri7:193.37:424.01:32-0.31:08-0.45:188:09New Moon27Fri
28Sat8:103.38:324.02:23-0.41:56-0.45:178:09New Moon28Sat
29Sun9:003.39:203.93:11-0.42:43-0.35:168:10New Moon29Sun
30Mon9:493.310:073.73:56-0.33:27-0.15:168:11Waxing Crescent30Mon
31Tue10:383.110:553.44:41-0.14:090.15:158:12Waxing Crescent31Tue
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 7:11 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 9% 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 Waxing Crescent (9% 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