Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Westport Harbor, MA.
Next low tide : in 43m at 10:41 pm (0.9 ft)
Next high tide (tomorrow) : 3:59 am (2.2 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:59 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - Jun 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:563.611:193.94:54-0.34:40-0.25:128:11Waxing Crescent1Wed
2Thu11:533.65:44-0.15:350.05:128:11Waxing Crescent2Thu
3Fri12:163.712:513.56:380.06:360.25:118:12First Quarter3Fri
4Sat1:133.41:493.57:460.28:040.55:118:13First Quarter4Sat
5Sun2:103.22:463.49:010.39:530.55:118:14First Quarter5Sun
6Mon3:073.03:443.49:590.311:010.55:108:14First Quarter6Mon
7Tue4:072.84:443.410:430.411:530.55:108:15Waxing Gibbous7Tue
8Wed5:082.75:423.411:170.45:108:16Waxing Gibbous8Wed
9Thu6:052.76:343.412:330.411:50 AM0.45:108:16Waxing Gibbous9Thu
10Fri6:552.87:203.41:060.412:260.35:098:17Waxing Gibbous10Fri
11Sat7:412.88:033.41:370.31:050.35:098:17Full Moon11Sat
12Sun8:232.98:423.42:120.31:470.25:098:18Full Moon12Sun
13Mon9:032.99:203.32:510.22:310.25:098:18Full Moon13Mon
14Tue9:422.89:563.23:300.23:150.25:098:19Full Moon14Tue
15Wed10:202.810:323.14:080.23:580.35:098:19Waning Gibbous15Wed
16Thu10:592.711:102.94:430.24:390.35:098:20Waning Gibbous16Thu
17Fri11:392.711:492.85:170.25:190.45:098:20Waning Gibbous17Fri
18Sat12:212.75:510.36:010.55:098:20Waning Gibbous18Sat
19Sun12:322.71:052.76:270.36:490.65:098:21Third Quarter19Sun
20Mon1:172.61:502.87:100.37:490.75:108:21Third Quarter20Mon
21Tue2:062.62:382.98:010.39:010.65:108:21Third Quarter21Tue
22Wed2:592.63:313.18:580.210:150.55:108:21Third Quarter22Wed
23Thu3:582.64:323.39:580.111:200.35:108:21Waning Crescent23Thu
24Fri5:032.85:353.510:560.05:118:22Waning Crescent24Fri
25Sat6:063.06:343.812:160.111:52 AM-0.25:118:22Waning Crescent25Sat
26Sun7:043.27:304.01:09-0.112:47-0.35:118:22New Moon26Sun
27Mon7:593.58:234.22:03-0.21:42-0.45:128:22New Moon27Mon
28Tue8:523.79:164.22:59-0.32:39-0.45:128:22New Moon28Tue
29Wed9:453.810:084.13:52-0.33:36-0.35:128:22Waxing Crescent29Wed
30Thu10:393.811:013.94:40-0.34:32-0.25:138:22Waxing Crescent30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447975)

Common Questions About Westport Harbor, MA Tides

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What time does the tide turn (slack tide) in Westport Harbor, MA today?

Slack tide in Westport Harbor, MA is approximately 1:20 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 Westport Harbor, MA?

Westport Harbor, MA is currently in a transitional phase. Tonight's moon is 65% 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 Westport Harbor, MA 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 Westport Harbor, MA?

Tide predictions for Westport Harbor, MA 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 Westport Harbor, MA?

Tide data for Westport Harbor, MA is sourced from NOAA Station #8447975. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447975.

What is the moon phase in Westport Harbor, MA tonight?

Tonight the moon over Westport Harbor, MA is First Quarter (65% illuminated). This places Westport Harbor, MA 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