Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Westport Harbor, MA.
Next low tide : 4:38 pm (0.1 ft)
Next high tide : in 3h 19m at 10:35 am (3.8 ft)
Sunset today : 7:44 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - Oct 1949

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:112.73:513.010:150.711:070.65:415:27Waxing Gibbous1Sat
2Sun4:152.84:503.011:020.611:390.55:425:25Waxing Gibbous2Sun
3Mon5:113.05:383.111:360.55:435:23Waxing Gibbous3Mon
4Tue5:573.16:193.112:000.512:060.45:445:22Waxing Gibbous4Tue
5Wed6:373.36:553.112:200.312:390.35:455:20Full Moon5Wed
6Thu7:133.37:303.112:440.21:140.25:465:18Full Moon6Thu
7Fri7:473.48:033.01:140.21:520.25:475:17Full Moon7Fri
8Sat8:183.38:372.91:460.12:300.25:485:15Full Moon8Sat
9Sun8:503.29:122.82:200.13:060.25:495:13Waning Gibbous9Sun
10Mon9:223.19:502.62:540.23:410.45:505:12Waning Gibbous10Mon
11Tue9:583.010:322.53:280.34:150.55:515:10Waning Gibbous11Tue
12Wed10:402.911:202.44:040.44:520.65:525:08Waning Gibbous12Wed
13Thu11:312.84:430.55:380.85:545:07Third Quarter13Thu
14Fri12:142.312:282.75:330.66:500.95:555:05Third Quarter14Fri
15Sat1:102.41:282.86:390.78:450.85:565:04Third Quarter15Sat
16Sun2:082.52:302.98:020.69:460.65:575:02Third Quarter16Sun
17Mon3:112.83:363.19:240.410:290.35:585:01Waning Crescent17Mon
18Tue4:133.14:383.310:300.211:070.05:594:59Waning Crescent18Tue
19Wed5:103.55:333.511:26-0.111:45-0.26:004:58Waning Crescent19Wed
20Thu6:023.96:253.612:18-0.36:014:56New Moon20Thu
21Fri6:524.27:143.712:25-0.41:10-0.46:034:55New Moon21Fri
22Sat7:414.48:043.61:08-0.52:03-0.46:044:53New Moon22Sat
23Sun8:304.48:553.51:52-0.42:54-0.36:054:52Waxing Crescent23Sun
24Mon9:224.29:473.32:38-0.33:44-0.16:064:50Waxing Crescent24Mon
25Tue10:163.910:433.13:25-0.14:340.26:074:49Waxing Crescent25Tue
26Wed11:143.611:422.94:120.15:320.46:084:47Waxing Crescent26Wed
27Thu12:153.35:040.47:240.66:104:46First Quarter27Thu
28Fri12:432.81:163.06:100.78:500.76:114:45First Quarter28Fri
29Sat1:442.72:172.98:400.89:460.76:124:43First Quarter29Sat
30Sun2:452.73:182.89:560.710:250.66:134:42Waxing Gibbous30Sun
31Mon3:472.84:162.710:400.610:510.56:144:41Waxing Gibbous31Mon
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 1:36 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 spring phase. Tonight's moon is 11% 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 near their weekly maximum.

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 Waxing Crescent (11% illuminated). This places Westport Harbor, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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