Nearby Harbors
41.1867’ N, 71.5783’ W

Block Island, RI

59°
H -°
L 57°
ESE
7mph
High tide
3:01 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 (tomorrow) : 8:37 am (1.0 ft)
Next high tide (tomorrow) : in 3h 22m at 3:01 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 - May 1858

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:222.49:352.93:080.22:420.34:476:46Waning Gibbous1Sat
2Sun10:022.310:152.73:430.43:210.54:466:47Waning Gibbous2Sun
3Mon10:452.211:012.64:270.54:040.64:456:48Waning Gibbous3Mon
4Tue11:352.111:522.55:250.64:550.74:436:49Third Quarter4Tue
5Wed12:272.16:410.76:000.84:426:51Third Quarter5Wed
6Thu12:472.41:242.27:430.67:200.84:416:52Third Quarter6Thu
7Fri1:452.42:242.48:320.58:510.64:406:53Third Quarter7Fri
8Sat2:482.53:242.79:140.49:590.44:396:54Waning Crescent8Sat
9Sun3:492.64:173.19:550.210:520.24:376:55Waning Crescent9Sun
10Mon4:432.85:063.510:350.011:42-0.14:366:56Waning Crescent10Mon
11Tue5:332.95:533.811:17-0.24:356:57Waning Crescent11Tue
12Wed6:223.16:414.012:31-0.312:02-0.44:346:58New Moon12Wed
13Thu7:123.17:314.11:21-0.412:49-0.54:336:59New Moon13Thu
14Fri8:033.28:224.12:11-0.51:38-0.44:327:00New Moon14Fri
15Sat8:543.19:153.93:01-0.42:28-0.44:317:01Waxing Crescent15Sat
16Sun9:483.110:113.73:56-0.23:21-0.24:307:02Waxing Crescent16Sun
17Mon10:463.011:113.44:59-0.14:220.04:297:03Waxing Crescent17Mon
18Tue11:472.96:050.15:440.24:287:04First Quarter18Tue
19Wed12:123.212:492.97:070.27:130.34:277:05First Quarter19Wed
20Thu1:142.91:522.98:030.28:270.44:277:06First Quarter20Thu
21Fri2:162.72:553.08:540.39:330.44:267:06First Quarter21Fri
22Sat3:192.63:543.19:400.310:280.44:257:07Waxing Gibbous22Sat
23Sun4:152.54:453.210:190.311:160.44:247:08Waxing Gibbous23Sun
24Mon5:042.55:303.310:530.311:590.34:247:09Waxing Gibbous24Mon
25Tue5:482.56:113.311:240.34:237:10Waxing Gibbous25Tue
26Wed6:292.56:503.312:380.311:56 AM0.34:227:11Full Moon26Wed
27Thu7:082.67:273.31:150.212:300.34:227:12Full Moon27Thu
28Fri7:472.68:033.21:510.21:080.34:217:13Full Moon28Fri
29Sat8:242.58:393.12:260.21:460.34:207:13Full Moon29Sat
30Sun9:022.59:153.03:000.32:240.44:207:14Waning Gibbous30Sun
31Mon9:412.49:542.93:360.43:040.54:197:15Waning Gibbous31Mon
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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