Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Westport Harbor, MA.
Next low tide (tomorrow) : 9:47 am (0.8 ft)
Next high tide (tomorrow) : in 5h 12m at 3:59 am (2.2 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:59 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - May 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:273.49:473.93:24-0.43:10-0.45:417:41New Moon1Sun
2Mon10:183.410:393.94:12-0.43:59-0.45:407:42Waxing Crescent2Mon
3Tue11:123.311:343.74:59-0.34:48-0.25:397:43Waxing Crescent3Tue
4Wed12:083.35:49-0.15:410.05:377:44Waxing Crescent4Wed
5Thu12:323.51:073.26:490.16:410.25:367:45First Quarter5Thu
6Fri1:323.32:073.28:250.28:020.45:357:46First Quarter6Fri
7Sat2:323.23:063.29:480.310:040.45:347:47First Quarter7Sat
8Sun3:323.04:083.310:450.311:170.45:327:48Waxing Gibbous8Sun
9Mon4:362.95:103.411:290.25:317:49Waxing Gibbous9Mon
10Tue5:372.96:063.512:090.312:010.25:307:50Waxing Gibbous10Tue
11Wed6:313.06:573.612:510.212:280.25:297:51Waxing Gibbous11Wed
12Thu7:193.07:423.61:260.212:580.15:287:52Full Moon12Thu
13Fri8:043.08:253.62:000.11:330.15:277:53Full Moon13Fri
14Sat8:463.09:053.52:340.12:120.15:267:54Full Moon14Sat
15Sun9:272.99:443.33:110.12:540.15:257:55Full Moon15Sun
16Mon10:072.810:233.23:490.13:360.25:247:56Waning Gibbous16Mon
17Tue10:472.711:023.04:260.24:180.25:237:57Waning Gibbous17Tue
18Wed11:292.611:422.85:040.24:590.45:227:58Waning Gibbous18Wed
19Thu12:122.55:420.35:420.55:217:59Waning Gibbous19Thu
20Fri12:232.712:562.56:220.46:290.65:208:00Third Quarter20Fri
21Sat1:072.51:402.57:080.57:260.75:198:01Third Quarter21Sat
22Sun1:522.52:262.68:010.58:370.75:198:02Third Quarter22Sun
23Mon2:402.53:152.78:580.49:520.65:188:03Third Quarter23Mon
24Tue3:342.54:092.99:520.310:560.45:178:04Waning Crescent24Tue
25Wed4:342.65:073.210:430.111:490.25:168:05Waning Crescent25Wed
26Thu5:352.86:033.411:320.05:168:06Waning Crescent26Thu
27Fri6:323.06:573.712:380.012:20-0.25:158:07Waning Crescent27Fri
28Sat7:253.27:484.01:27-0.21:09-0.35:148:07New Moon28Sat
29Sun8:173.48:394.12:18-0.31:59-0.45:148:08New Moon29Sun
30Mon9:093.59:314.13:12-0.32:52-0.45:138:09New Moon30Mon
31Tue10:023.610:244.14:04-0.33:46-0.35:138:10Waxing Crescent31Tue
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 6:53 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 65% 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 First Quarter (65% 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