Tides Today & Tomorrow in Westerly, RI

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Westerly, RI.
Next low tide : in 5h 35m at 9:25 pm (0.6 ft)
Next high tide (tomorrow) : 2:35 am (2.3 ft)
Sunset today : 7:42 pm
Sunrise tomorrow : 5:59 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8455189
Common Questions About Tides

Westerly, RI Tides - Aug 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:362.810:493.05:050.35:180.55:418:05Full Moon1Tue
2Wed11:192.911:302.95:410.35:580.65:428:04Waning Gibbous2Wed
3Thu12:032.96:170.46:420.65:438:03Waning Gibbous3Thu
4Fri12:132.812:482.96:550.47:290.65:448:02Waning Gibbous4Fri
5Sat12:572.71:322.97:360.58:180.75:458:01Waning Gibbous5Sat
6Sun1:412.62:162.98:190.69:090.75:467:59Third Quarter6Sun
7Mon2:262.53:012.99:040.710:020.65:477:58Third Quarter7Mon
8Tue3:162.43:522.99:530.710:570.65:487:57Third Quarter8Tue
9Wed4:142.34:493.010:470.711:520.55:497:56Third Quarter9Wed
10Thu5:142.45:453.211:440.65:507:54Waning Crescent10Thu
11Fri6:082.56:363.312:470.312:420.55:517:53Waning Crescent11Fri
12Sat6:582.77:253.51:400.21:390.35:527:52Waning Crescent12Sat
13Sun7:482.98:143.62:320.02:360.15:537:50New Moon13Sun
14Mon8:393.19:043.63:22-0.23:320.05:547:49New Moon14Mon
15Tue9:303.39:543.64:10-0.34:25-0.15:557:48New Moon15Tue
16Wed10:223.510:453.54:58-0.35:19-0.25:567:46New Moon16Wed
17Thu11:153.611:383.35:46-0.36:14-0.15:577:45Waxing Crescent17Thu
18Fri12:113.66:37-0.27:130.05:587:43Waxing Crescent18Fri
19Sat12:343.11:083.57:310.08:140.15:597:42Waxing Crescent19Sat
20Sun1:312.92:063.48:270.29:150.36:007:40First Quarter20Sun
21Mon2:292.73:053.39:260.410:160.46:017:39First Quarter21Mon
22Tue3:312.54:083.110:260.511:180.56:027:37First Quarter22Tue
23Wed4:382.45:123.111:270.66:037:36First Quarter23Wed
24Thu5:412.46:093.012:170.512:270.76:047:34Waxing Gibbous24Thu
25Fri6:342.56:583.01:110.51:220.76:057:33Waxing Gibbous25Fri
26Sat7:212.67:423.02:000.52:120.66:067:31Waxing Gibbous26Sat
27Sun8:042.78:233.02:440.52:580.66:077:30Waxing Gibbous27Sun
28Mon8:462.99:043.03:230.43:380.56:087:28Full Moon28Mon
29Tue9:273.09:433.03:590.44:160.56:097:27Full Moon29Tue
30Wed10:083.010:223.04:320.44:530.56:107:25Full Moon30Wed
31Thu10:483.111:012.95:060.45:310.56:117:23Full Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8455189)

Common Questions About Westerly, RI Tides

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What time does the tide turn (slack tide) in Westerly, RI today?

Slack tide in Westerly, RI is approximately 12:00 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 Westerly, RI?

Westerly, RI is currently in a transitional phase. Tonight's moon is 36% 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 Westerly, 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 Westerly, RI?

Tide predictions for Westerly, 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 Westerly, RI?

Tide data for Westerly, RI is sourced from NOAA Station #8455189. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8455189.

What is the moon phase in Westerly, RI tonight?

Tonight the moon over Westerly, RI is First Quarter (36% illuminated). This places Westerly, 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