Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

65°
H -°
L 58°
NNE
15mph
High tide
1:53 am
Photo Credits

Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 7:10 am (1.0 ft)
Next high tide : in 40m at 1:53 am (2.1 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Featured Local Businesses

Champlins Marina Resort, docks filled on a sunny summer day

Champlin's Marina & Resort
New Harbor Great Salt Pond Block Island Aerial

New Shoreham (Block Island) Harbormaster
Coast Guard Station, Point Judith Rhode Island,

USCG Station Point Judith, RI
Beach in East Hampton, NY -- Nicole Mayone, CC BY-SA 2.0 , via Wikimedia Commons

East Hampton Harbormaster

Block Island, RI Tides - Jul 1860

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:522.86:233.612:120.211:43 AM0.24:217:26Full Moon1Sun
2Mon6:422.97:103.512:590.112:330.24:217:26Full Moon2Mon
3Tue7:292.97:543.51:420.11:190.24:227:26Full Moon3Tue
4Wed8:132.98:353.42:200.11:590.24:227:26Full Moon4Wed
5Thu8:562.99:133.22:540.12:350.34:237:25Waning Gibbous5Thu
6Fri9:372.99:503.13:250.23:100.44:237:25Waning Gibbous6Fri
7Sat10:172.810:272.93:540.23:480.64:247:25Waning Gibbous7Sat
8Sun10:562.711:052.74:220.34:320.74:257:24Waning Gibbous8Sun
9Mon11:352.711:452.54:550.45:250.84:257:24Third Quarter9Mon
10Tue12:142.75:320.56:290.94:267:24Third Quarter10Tue
11Wed12:282.412:562.76:140.57:450.94:277:23Third Quarter11Wed
12Thu1:162.31:452.87:010.69:020.84:287:23Third Quarter12Thu
13Fri2:132.22:442.97:540.510:040.74:287:22Waning Crescent13Fri
14Sat3:192.23:483.08:530.510:570.54:297:22Waning Crescent14Sat
15Sun4:222.44:473.39:540.311:450.44:307:21Waning Crescent15Sun
16Mon5:172.65:393.510:520.24:317:20Waning Crescent16Mon
17Tue6:072.96:293.712:310.211:47 AM0.04:327:20New Moon17Tue
18Wed6:573.17:173.81:150.012:41-0.24:327:19New Moon18Wed
19Thu7:463.38:053.91:56-0.21:34-0.34:337:18New Moon19Thu
20Fri8:353.58:533.82:35-0.32:27-0.34:347:18Waxing Crescent20Fri
21Sat9:253.69:423.63:13-0.33:20-0.24:357:17Waxing Crescent21Sat
22Sun10:173.710:333.43:52-0.34:180.04:367:16Waxing Crescent22Sun
23Mon11:113.711:273.14:35-0.25:280.24:377:15First Quarter23Mon
24Tue12:073.65:220.06:460.34:387:14First Quarter24Tue
25Wed12:232.81:063.56:160.18:000.44:397:13First Quarter25Wed
26Thu1:232.62:113.47:180.39:100.54:407:12First Quarter26Thu
27Fri2:302.53:213.38:330.410:130.54:417:11Waxing Gibbous27Fri
28Sat3:422.54:263.39:480.411:080.54:417:11Waxing Gibbous28Sat
29Sun4:452.65:223.310:500.411:560.44:427:09Waxing Gibbous29Sun
30Mon5:382.76:103.311:420.34:437:08Waxing Gibbous30Mon
31Tue6:262.96:533.412:390.312:270.34:447:07Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

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Common Questions About Block Island, RI Tides

Collapse All
Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Block Island, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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

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