Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently rising in Westport Harbor, MA.
Next low tide (tomorrow) : 6:11 am (0.2 ft)
Next high tide (tomorrow) : in 4h 54m at 12:14 am (3.3 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 - Sep 1980

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:273.31:593.67:000.29:220.56:107:17Third Quarter1Mon
2Tue2:263.13:003.48:050.410:410.56:117:15Third Quarter2Tue
3Wed3:273.04:043.39:300.611:400.56:127:14Waning Crescent3Wed
4Thu4:323.05:113.310:540.66:137:12Waning Crescent4Thu
5Fri5:353.06:103.312:280.511:49 AM0.56:147:10Waning Crescent5Fri
6Sat6:303.17:003.41:070.412:290.46:157:09Waning Crescent6Sat
7Sun7:183.37:443.41:370.41:060.36:167:07New Moon7Sun
8Mon8:023.48:243.42:010.31:450.26:177:05New Moon8Mon
9Tue8:423.49:013.32:250.22:250.26:187:04New Moon9Tue
10Wed9:203.49:363.22:550.23:070.26:197:02New Moon10Wed
11Thu9:573.310:113.13:270.23:470.26:207:00Waxing Crescent11Thu
12Fri10:333.210:462.94:010.24:260.26:216:58Waxing Crescent12Fri
13Sat11:093.111:242.74:340.25:040.36:226:57Waxing Crescent13Sat
14Sun11:472.95:080.35:430.56:236:55Waxing Crescent14Sun
15Mon12:052.612:282.85:430.46:250.66:256:53First Quarter15Mon
16Tue12:502.51:142.86:240.57:170.76:266:52First Quarter16Tue
17Wed1:392.42:042.87:140.68:270.86:276:50First Quarter17Wed
18Thu2:322.42:592.88:190.69:510.76:286:48First Quarter18Thu
19Fri3:302.54:003.09:330.610:560.56:296:46Waxing Gibbous19Fri
20Sat4:332.75:053.210:440.411:450.36:306:45Waxing Gibbous20Sat
21Sun5:363.06:043.511:440.16:316:43Waxing Gibbous21Sun
22Mon6:323.46:583.712:290.012:38-0.16:326:41Waxing Gibbous22Mon
23Tue7:243.87:493.91:12-0.21:30-0.36:336:39Full Moon23Tue
24Wed8:144.18:394.01:55-0.42:23-0.46:346:38Full Moon24Wed
25Thu9:044.39:294.02:40-0.53:17-0.46:356:36Full Moon25Thu
26Fri9:544.310:203.93:25-0.54:09-0.36:366:34Waning Gibbous26Fri
27Sat10:464.211:133.74:10-0.45:01-0.16:376:33Waning Gibbous27Sat
28Sun11:414.04:55-0.25:540.16:386:31Waning Gibbous28Sun
29Mon12:103.512:393.85:410.07:050.46:396:29Third Quarter29Mon
30Tue1:083.21:393.56:340.39:060.66:406:27Third Quarter30Tue
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 3:12 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