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 6h 12m 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 - Jan 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:072.83:372.410:020.29:38-0.17:104:24Waxing Gibbous1Sun
2Mon4:103.04:412.610:580.010:34-0.37:114:25Waxing Gibbous2Mon
3Tue5:113.35:392.911:49-0.211:28-0.57:114:26Waxing Gibbous3Tue
4Wed6:063.66:333.212:39-0.47:114:27Full Moon4Wed
5Thu6:583.87:253.412:21-0.61:29-0.57:114:28Full Moon5Thu
6Fri7:504.08:173.61:15-0.72:20-0.67:114:29Full Moon6Fri
7Sat8:414.09:093.72:09-0.73:07-0.67:104:30Waning Gibbous7Sat
8Sun9:323.810:023.63:03-0.73:51-0.67:104:31Waning Gibbous8Sun
9Mon10:253.610:573.53:55-0.54:34-0.47:104:32Waning Gibbous9Mon
10Tue11:203.311:543.44:48-0.25:18-0.37:104:33Waning Gibbous10Tue
11Wed12:163.05:470.06:080.07:104:34Third Quarter11Wed
12Thu12:513.31:122.87:160.37:100.17:094:35Third Quarter12Thu
13Fri1:493.12:102.69:070.48:260.37:094:36Third Quarter13Fri
14Sat2:493.03:112.410:140.49:330.37:094:37Waning Crescent14Sat
15Sun3:532.94:152.411:050.310:210.37:084:38Waning Crescent15Sun
16Mon4:532.95:132.511:440.311:010.27:084:39Waning Crescent16Mon
17Tue5:452.96:022.612:150.27:074:40Waning Crescent17Tue
18Wed6:293.06:452.712:440.17:074:42New Moon18Wed
19Thu7:093.07:252.712:210.01:170.07:064:43New Moon19Thu
20Fri7:463.08:022.81:03-0.11:52-0.17:064:44New Moon20Fri
21Sat8:203.08:382.71:45-0.22:26-0.27:054:45New Moon21Sat
22Sun8:542.99:132.72:27-0.23:00-0.27:054:46Waxing Crescent22Sun
23Mon9:272.89:482.63:06-0.13:31-0.27:044:48Waxing Crescent23Mon
24Tue10:032.710:252.63:42-0.14:01-0.17:034:49Waxing Crescent24Tue
25Wed10:422.511:062.64:180.04:33-0.17:024:50Waxing Crescent25Wed
26Thu11:262.411:512.64:560.15:09-0.17:024:51First Quarter26Thu
27Fri12:142.35:410.35:520.07:014:53First Quarter27Fri
28Sat12:402.61:072.36:390.36:470.07:004:54First Quarter28Sat
29Sun1:342.72:042.37:560.47:530.06:594:55First Quarter29Sun
30Mon2:342.83:092.49:260.29:04-0.16:584:56Waxing Gibbous30Mon
31Tue3:422.94:172.610:370.010:11-0.36:574:58Waxing Gibbous31Tue
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