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 6h 18m 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 - May 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:302.89:383.13:250.02:510.15:447:42New Moon1Mon
2Tue10:062.710:113.03:540.13:260.25:427:43Waxing Crescent2Tue
3Wed10:442.610:462.94:230.24:030.35:417:44Waxing Crescent3Wed
4Thu11:252.411:262.74:570.44:430.45:407:45Waxing Crescent4Thu
5Fri12:092.45:380.55:290.65:397:47Waxing Crescent5Fri
6Sat12:112.612:572.36:290.66:230.65:377:48First Quarter6Sat
7Sun1:002.51:492.47:290.67:270.75:367:49First Quarter7Sun
8Mon1:542.52:442.58:300.58:410.65:357:50First Quarter8Mon
9Tue2:542.53:442.79:270.410:030.55:347:51First Quarter9Tue
10Wed3:592.64:443.010:200.311:100.25:337:52Waxing Gibbous10Wed
11Thu5:022.85:383.411:090.05:327:53Waxing Gibbous11Thu
12Fri5:593.06:283.712:050.011:55 AM-0.25:317:54Waxing Gibbous12Fri
13Sat6:513.27:184.012:56-0.312:41-0.45:307:55Full Moon13Sat
14Sun7:423.38:084.21:47-0.51:29-0.55:297:56Full Moon14Sun
15Mon8:333.48:594.22:38-0.62:19-0.55:287:57Full Moon15Mon
16Tue9:253.49:504.13:28-0.63:09-0.55:277:58Waning Gibbous16Tue
17Wed10:173.410:443.94:19-0.54:01-0.45:267:59Waning Gibbous17Wed
18Thu11:123.311:403.75:13-0.34:57-0.25:258:00Waning Gibbous18Thu
19Fri12:113.26:15-0.26:100.15:248:01Waning Gibbous19Fri
20Sat12:393.41:113.17:190.07:400.35:238:02Third Quarter20Sat
21Sun1:383.12:123.08:190.18:560.45:228:03Third Quarter21Sun
22Mon2:392.93:163.09:150.210:030.45:218:03Third Quarter22Mon
23Tue3:432.74:203.010:070.311:020.45:218:04Waning Crescent23Tue
24Wed4:452.65:173.110:530.311:540.45:208:05Waning Crescent24Wed
25Thu5:392.66:063.211:340.35:198:06Waning Crescent25Thu
26Fri6:262.66:503.212:390.312:090.25:198:07Waning Crescent26Fri
27Sat7:092.77:293.31:210.312:410.25:188:08New Moon27Sat
28Sun7:502.78:063.31:590.21:150.25:178:09New Moon28Sun
29Mon8:292.88:403.22:360.21:500.25:178:09New Moon29Mon
30Tue9:062.89:133.23:110.22:270.25:168:10New Moon30Tue
31Wed9:432.79:473.13:430.23:050.35:168:11Waxing Crescent31Wed
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