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 2h 33m 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 - May 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:532.44:222.510:540.610:440.75:407:42First Quarter1Sat
2Sun4:532.45:192.611:260.511:340.55:387:43Waxing Gibbous2Sun
3Mon5:462.46:072.811:550.45:377:44Waxing Gibbous3Mon
4Tue6:282.56:483.012:160.412:250.35:367:46Waxing Gibbous4Tue
5Wed7:052.67:243.112:560.212:570.25:357:47Waxing Gibbous5Wed
6Thu7:402.77:583.31:360.11:290.15:337:48Full Moon6Thu
7Fri8:152.88:323.32:160.02:040.05:327:49Full Moon7Fri
8Sat8:532.89:083.42:56-0.12:390.05:317:50Full Moon8Sat
9Sun9:322.89:473.43:35-0.13:160.05:307:51Full Moon9Sun
10Mon10:152.810:303.34:120.03:550.15:297:52Waning Gibbous10Mon
11Tue11:022.711:193.24:490.04:360.15:287:53Waning Gibbous11Tue
12Wed11:542.75:290.15:200.25:277:54Waning Gibbous12Wed
13Thu12:133.212:502.76:160.36:120.35:267:55Third Quarter13Thu
14Fri1:113.11:472.87:150.47:170.45:257:56Third Quarter14Fri
15Sat2:103.12:452.98:320.48:430.55:247:57Third Quarter15Sat
16Sun3:103.13:463.19:480.310:190.35:237:58Third Quarter16Sun
17Mon4:133.14:493.310:450.111:320.25:227:59Waning Crescent17Mon
18Tue5:173.15:503.611:310.05:218:00Waning Crescent18Tue
19Wed6:173.26:453.912:290.012:14-0.15:208:01Waning Crescent19Wed
20Thu7:113.37:364.11:21-0.112:56-0.25:198:02New Moon20Thu
21Fri8:013.48:254.12:12-0.21:39-0.25:198:03New Moon21Fri
22Sat8:513.39:134.03:02-0.22:24-0.25:188:04New Moon22Sat
23Sun9:393.310:013.83:49-0.13:10-0.15:178:05New Moon23Sun
24Mon10:293.110:503.54:310.03:560.15:168:05Waxing Crescent24Mon
25Tue11:193.011:413.35:090.24:420.25:168:06Waxing Crescent25Tue
26Wed12:112.85:480.45:280.45:158:07Waxing Crescent26Wed
27Thu12:333.01:042.76:330.56:180.65:158:08First Quarter27Thu
28Fri1:242.71:552.67:290.67:190.75:148:09First Quarter28Fri
29Sat2:132.62:452.68:370.78:360.85:138:10First Quarter29Sat
30Sun3:002.43:362.69:330.69:540.85:138:10First Quarter30Sun
31Mon3:492.34:272.710:170.610:550.75:128:11First Quarter31Mon
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