Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Westport Harbor, MA.
Next low tide : in 36m at 5:20 pm (0.3 ft)
Next high tide : 11:42 pm (3.2 ft)
Sunset today : 7:42 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - Mar 1947

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:032.92:392.49:210.38:210.16:195:33First Quarter1Sat
2Sun3:133.03:492.510:410.29:440.06:185:35Waxing Gibbous2Sun
3Mon4:263.14:562.811:370.010:57-0.16:165:36Waxing Gibbous3Mon
4Tue5:303.35:543.112:25-0.16:155:37Waxing Gibbous4Tue
5Wed6:243.56:463.41:08-0.36:135:38Full Moon5Wed
6Thu7:133.67:343.612:51-0.41:47-0.36:115:39Full Moon6Thu
7Fri8:003.68:213.61:42-0.52:21-0.46:105:40Full Moon7Fri
8Sat8:443.59:063.62:29-0.52:51-0.46:085:42Full Moon8Sat
9Sun9:283.29:523.53:11-0.43:21-0.36:075:43Waning Gibbous9Sun
10Mon10:123.010:373.23:50-0.23:52-0.26:055:44Waning Gibbous10Mon
11Tue10:582.711:233.04:280.04:260.06:035:45Waning Gibbous11Tue
12Wed11:442.45:080.25:040.26:025:46Waning Gibbous12Wed
13Thu12:112.712:332.25:550.45:480.46:005:47Third Quarter13Thu
14Fri1:002.51:232.06:570.66:450.55:585:48Third Quarter14Fri
15Sat1:522.32:172.08:290.77:590.65:575:50Third Quarter15Sat
16Sun2:542.23:202.09:510.69:220.55:555:51Third Quarter16Sun
17Mon4:032.24:242.110:440.510:280.45:535:52Waning Crescent17Mon
18Tue4:592.45:152.311:250.311:180.25:525:53Waning Crescent18Tue
19Wed5:412.65:572.612:010.25:505:54Waning Crescent19Wed
20Thu6:182.86:352.812:020.012:350.05:485:55Waning Crescent20Thu
21Fri6:553.07:133.012:44-0.11:08-0.25:465:56New Moon21Fri
22Sat7:323.17:513.21:26-0.31:41-0.35:455:57New Moon22Sat
23Sun8:123.28:313.42:06-0.42:14-0.45:435:58New Moon23Sun
24Mon8:543.19:133.42:46-0.42:48-0.45:415:59Waxing Crescent24Mon
25Tue9:393.09:593.43:26-0.33:25-0.45:406:01Waxing Crescent25Tue
26Wed10:292.910:503.34:07-0.24:04-0.35:386:02Waxing Crescent26Wed
27Thu11:232.811:463.24:52-0.14:49-0.15:366:03Waxing Crescent27Thu
28Fri12:212.75:470.25:410.15:356:04First Quarter28Fri
29Sat12:463.11:222.67:150.46:490.25:336:05First Quarter29Sat
30Sun1:513.02:272.69:300.48:180.35:316:06First Quarter30Sun
31Mon3:003.03:352.810:350.29:590.25:296:07Waxing 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 8:31 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 18% 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 (18% 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