Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Westport Harbor, MA.
Next low tide : 10:41 pm (0.9 ft)
Next high tide : in 2m at 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 - Feb 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:493.25:192.911:33-0.211:12-0.56:564:59Waxing Gibbous1Wed
2Thu5:493.56:153.312:23-0.46:555:00Waxing Gibbous2Thu
3Fri6:423.87:083.612:09-0.71:12-0.66:545:01Full Moon3Fri
4Sat7:343.97:593.81:05-0.82:00-0.76:535:03Full Moon4Sat
5Sun8:243.98:503.82:01-0.82:45-0.76:525:04Full Moon5Sun
6Mon9:143.89:413.82:54-0.73:26-0.76:515:05Waning Gibbous6Mon
7Tue10:043.510:343.63:44-0.64:04-0.56:505:06Waning Gibbous7Tue
8Wed10:563.211:283.44:31-0.34:43-0.36:495:08Waning Gibbous8Wed
9Thu11:502.95:210.05:26-0.16:475:09Third Quarter9Thu
10Fri12:243.212:452.76:220.26:150.16:465:10Third Quarter10Fri
11Sat1:202.91:412.48:150.47:180.36:455:11Third Quarter11Sat
12Sun2:192.72:412.39:410.58:380.46:445:13Third Quarter12Sun
13Mon3:232.63:462.210:360.59:540.46:425:14Waning Crescent13Mon
14Tue4:272.64:472.311:150.410:450.36:415:15Waning Crescent14Tue
15Wed5:222.65:382.411:470.311:270.16:405:16Waning Crescent15Wed
16Thu6:072.76:212.612:170.16:395:18Waning Crescent16Thu
17Fri6:452.86:592.712:080.012:490.06:375:19New Moon17Fri
18Sat7:192.97:342.812:49-0.11:23-0.16:365:20New Moon18Sat
19Sun7:522.98:082.91:30-0.21:57-0.26:345:21New Moon19Sun
20Mon8:252.98:422.92:10-0.32:29-0.36:335:23New Moon20Mon
21Tue8:592.89:162.92:47-0.32:59-0.36:325:24Waxing Crescent21Tue
22Wed9:352.79:532.83:22-0.23:30-0.36:305:25Waxing Crescent22Wed
23Thu10:152.610:342.83:56-0.14:02-0.26:295:26Waxing Crescent23Thu
24Fri11:012.511:212.84:310.04:37-0.26:275:27Waxing Crescent24Fri
25Sat11:512.45:120.15:21-0.16:265:29First Quarter25Sat
26Sun12:132.712:462.46:050.26:150.06:245:30First Quarter26Sun
27Mon1:092.81:442.47:180.37:220.06:235:31First Quarter27Mon
28Tue2:112.82:482.58:570.38:400.06:215:32First Quarter28Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447975)

Common Questions About Westport Harbor, MA Tides

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

Slack tide in Westport Harbor, MA is approximately 7:10 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