Tides Today & Tomorrow in Westport Harbor, MA

TIDE TIMES for Saturday, August 22, 2026
The tide is currently rising in Westport Harbor, MA.
Next low tide : 11:33 pm (0.8 ft)
Next high tide : in 1h 57m at 4:43 pm (2.6 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 6:00 am
Moon phase : Waxing Gibbous (73% illuminated)
Tide Station Location : Station #8447975
Common Questions About Tides

Westport Harbor, MA Tides - May 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:012.712:342.46:060.46:050.55:417:41Waning Gibbous1Sat
2Sun12:482.61:232.46:500.56:570.65:407:42Third Quarter2Sun
3Mon1:392.62:132.57:460.58:040.65:387:43Third Quarter3Mon
4Tue2:312.63:062.78:500.49:240.55:377:44Third Quarter4Tue
5Wed3:282.64:042.99:510.310:380.35:367:45Waning Crescent5Wed
6Thu4:302.85:053.210:450.111:390.15:357:46Waning Crescent6Thu
7Fri5:332.96:033.611:35-0.15:337:47Waning Crescent7Fri
8Sat6:313.16:573.912:33-0.112:23-0.35:327:48Waning Crescent8Sat
9Sun7:253.37:494.11:25-0.31:11-0.55:317:49New Moon9Sun
10Mon8:173.58:414.22:18-0.42:01-0.55:307:51New Moon10Mon
11Tue9:103.69:334.23:13-0.42:52-0.55:297:52New Moon11Tue
12Wed10:023.610:264.14:07-0.43:45-0.45:287:53Waxing Crescent12Wed
13Thu10:573.511:223.84:59-0.24:37-0.25:277:54Waxing Crescent13Thu
14Fri11:533.45:51-0.15:300.05:267:55Waxing Crescent14Fri
15Sat12:193.612:523.36:520.16:290.35:257:56First Quarter15Sat
16Sun1:173.31:503.28:150.37:490.55:247:57First Quarter16Sun
17Mon2:143.02:473.29:260.49:490.65:237:58First Quarter17Mon
18Tue3:112.83:453.110:180.410:560.65:227:59First Quarter18Tue
19Wed4:092.74:443.110:550.411:420.55:218:00Waxing Gibbous19Wed
20Thu5:082.65:393.211:220.45:208:01Waxing Gibbous20Thu
21Fri6:022.66:283.212:170.511:50 AM0.45:198:01Waxing Gibbous21Fri
22Sat6:492.67:123.312:480.412:220.35:188:02Waxing Gibbous22Sat
23Sun7:312.77:513.31:220.312:590.25:188:03Full Moon23Sun
24Mon8:102.78:283.31:590.21:380.25:178:04Full Moon24Mon
25Tue8:482.79:033.22:390.12:200.25:168:05Full Moon25Tue
26Wed9:252.79:383.23:200.13:020.25:168:06Full Moon26Wed
27Thu10:032.710:143.13:590.13:430.25:158:07Waning Gibbous27Thu
28Fri10:422.610:533.04:340.24:230.35:148:08Waning Gibbous28Fri
29Sat11:242.611:352.95:080.25:020.45:148:09Waning Gibbous29Sat
30Sun12:092.65:420.35:430.45:138:09Waning Gibbous30Sun
31Mon12:222.812:572.76:200.36:320.55:138:10Third 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 8:08 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 transitional phase. Tonight's moon is 73% 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 Gibbous (73% 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