Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently falling in Westport Harbor, MA.
Next low tide : in 1h 13m at 5:37 am (0.0 ft)
Next high tide : 11:54 am (3.6 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - Jun 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:422.35:182.810:570.511:430.55:128:12Waxing Gibbous1Tue
2Wed5:332.46:033.011:340.35:128:13Waxing Gibbous2Wed
3Thu6:192.56:443.112:270.412:110.25:118:13Waxing Gibbous3Thu
4Fri7:022.67:223.31:080.212:490.15:118:14Waxing Gibbous4Fri
5Sat7:442.78:023.41:500.11:280.15:118:15Full Moon5Sat
6Sun8:262.88:443.52:330.02:090.05:108:15Full Moon6Sun
7Mon9:112.99:283.63:160.02:520.05:108:16Full Moon7Mon
8Tue9:572.910:153.53:580.03:380.05:108:17Waning Gibbous8Tue
9Wed10:473.011:063.54:390.04:240.15:108:17Waning Gibbous9Wed
10Thu11:403.05:220.15:130.15:108:18Waning Gibbous10Thu
11Fri12:003.412:353.06:080.16:080.35:108:18Waning Gibbous11Fri
12Sat12:563.31:323.17:020.27:140.45:108:19Third Quarter12Sat
13Sun1:533.22:283.28:040.28:440.55:098:19Third Quarter13Sun
14Mon2:503.13:263.49:090.210:220.45:098:19Third Quarter14Mon
15Tue3:503.04:283.510:060.211:310.35:108:20Waning Crescent15Tue
16Wed4:543.05:293.710:570.15:108:20Waning Crescent16Wed
17Thu5:553.06:273.812:270.211:43 AM0.15:108:21Waning Crescent17Thu
18Fri6:523.17:193.91:170.112:280.05:108:21Waning Crescent18Fri
19Sat7:443.18:093.92:060.11:140.05:108:21New Moon19Sat
20Sun8:333.28:573.82:530.12:000.15:108:21New Moon20Sun
21Mon9:213.29:433.63:370.12:480.15:108:22New Moon21Mon
22Tue10:083.110:293.44:140.23:360.25:118:22Waxing Crescent22Tue
23Wed10:553.011:143.24:480.34:220.35:118:22Waxing Crescent23Wed
24Thu11:432.95:210.35:070.45:118:22Waxing Crescent24Thu
25Fri12:003.012:312.85:570.45:540.55:128:22Waxing Crescent25Fri
26Sat12:452.81:182.76:370.56:460.75:128:22First Quarter26Sat
27Sun1:272.62:022.77:230.67:490.85:138:22First Quarter27Sun
28Mon2:082.42:452.78:130.69:010.85:138:22First Quarter28Mon
29Tue2:502.33:302.79:050.610:090.75:138:22First Quarter29Tue
30Wed3:372.34:182.89:550.511:060.65:148:22Waxing Gibbous30Wed
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 8:45 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 23% 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 Waxing Crescent (23% 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