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 2h 13m at 8:33 am (0.8 ft)
Next high tide : 3:39 pm (2.7 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 - Jan 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:103.312:323.15:550.06:26-0.17:104:24Third Quarter1Mon
2Tue1:083.31:302.97:220.27:370.17:114:25Third Quarter2Tue
3Wed2:083.22:302.89:170.38:540.17:114:26Third Quarter3Wed
4Thu3:103.23:352.710:290.29:580.17:114:27Waning Crescent4Thu
5Fri4:153.34:392.711:230.110:470.07:114:28Waning Crescent5Fri
6Sat5:143.35:362.812:080.17:114:28Waning Crescent6Sat
7Sun6:073.46:272.912:480.07:114:29New Moon7Sun
8Mon6:543.47:133.012:09-0.11:220.07:104:30New Moon8Mon
9Tue7:383.47:573.012:50-0.11:53-0.17:104:31New Moon9Tue
10Wed8:193.38:393.01:33-0.22:25-0.17:104:32New Moon10Wed
11Thu8:593.29:192.92:16-0.22:58-0.17:104:33Waxing Crescent11Thu
12Fri9:383.010:002.72:58-0.13:31-0.17:104:35Waxing Crescent12Fri
13Sat10:162.810:402.63:380.04:06-0.17:094:36Waxing Crescent13Sat
14Sun10:552.611:202.54:190.14:410.07:094:37Waxing Crescent14Sun
15Mon11:352.45:010.25:190.17:084:38First Quarter15Mon
16Tue12:012.412:162.25:480.46:020.27:084:39First Quarter16Tue
17Wed12:432.41:012.16:460.56:520.27:084:40First Quarter17Wed
18Thu1:282.41:502.18:010.57:510.27:074:41First Quarter18Thu
19Fri2:192.42:472.19:210.48:530.17:074:42First Quarter19Fri
20Sat3:182.53:502.210:230.39:520.07:064:44Waxing Gibbous20Sat
21Sun4:212.74:512.511:130.110:47-0.27:054:45Waxing Gibbous21Sun
22Mon5:193.05:462.811:58-0.111:38-0.47:054:46Waxing Gibbous22Mon
23Tue6:113.36:373.112:43-0.47:044:47Full Moon23Tue
24Wed7:003.67:273.312:29-0.61:28-0.57:034:49Full Moon24Wed
25Thu7:493.78:163.51:20-0.72:14-0.67:034:50Full Moon25Thu
26Fri8:383.89:073.62:12-0.82:57-0.77:024:51Waning Gibbous26Fri
27Sat9:283.79:593.63:04-0.73:39-0.77:014:52Waning Gibbous27Sat
28Sun10:213.510:533.63:54-0.64:21-0.67:004:53Waning Gibbous28Sun
29Mon11:153.311:493.44:45-0.45:04-0.46:594:55Waning Gibbous29Mon
30Tue12:123.05:42-0.15:54-0.26:584:56Third Quarter30Tue
31Wed12:473.31:092.87:040.26:560.06:574:57Third Quarter31Wed
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 12:06 pm — 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