Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide : 2:36 pm (0.3 ft)
Next high tide : in 3h 36m at 8:30 am (2.6 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Apr 2059

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:432.94:112.79:580.010:110.26:237:06Waning Gibbous1Tue
2Wed4:202.94:522.610:400.110:510.36:217:07Waning Gibbous2Wed
3Thu5:002.95:372.511:250.111:370.46:197:08Waning Gibbous3Thu
4Fri5:472.86:292.412:170.26:187:09Third Quarter4Fri
5Sat6:412.87:282.412:300.41:140.26:167:10Third Quarter5Sat
6Sun7:422.88:312.41:290.52:160.26:147:11Third Quarter6Sun
7Mon8:472.89:362.52:330.43:180.16:137:12Waning Crescent7Mon
8Tue9:532.910:382.73:370.34:200.06:117:13Waning Crescent8Tue
9Wed10:583.011:362.94:410.25:19-0.16:097:14Waning Crescent9Wed
10Thu11:573.15:41-0.16:12-0.26:087:15Waning Crescent10Thu
11Fri12:283.112:523.26:37-0.27:02-0.36:067:16New Moon11Fri
12Sat1:173.31:443.27:29-0.47:50-0.36:047:18New Moon12Sat
13Sun2:053.32:353.28:19-0.58:38-0.26:037:19New Moon13Sun
14Mon2:523.33:263.19:09-0.49:25-0.16:017:20Waxing Crescent14Mon
15Tue3:393.34:163.09:58-0.310:120.06:007:21Waxing Crescent15Tue
16Wed4:263.25:072.810:48-0.211:010.25:587:22Waxing Crescent16Wed
17Thu5:153.06:002.611:400.011:530.45:577:23Waxing Crescent17Thu
18Fri6:082.86:572.512:360.25:557:24First Quarter18Fri
19Sat7:062.77:562.412:490.51:340.35:537:25First Quarter19Sat
20Sun8:072.68:562.41:480.62:340.45:527:26First Quarter20Sun
21Mon9:082.59:542.42:480.73:320.45:507:27First Quarter21Mon
22Tue10:082.610:472.53:470.64:260.45:497:28Waxing Gibbous22Tue
23Wed11:022.611:322.64:430.55:140.45:487:30Waxing Gibbous23Wed
24Thu11:492.75:320.45:550.35:467:31Waxing Gibbous24Thu
25Fri12:122.712:312.76:160.36:340.35:457:32Waxing Gibbous25Fri
26Sat12:482.81:112.76:560.27:100.35:437:33Full Moon26Sat
27Sun1:232.91:492.77:350.17:470.25:427:34Full Moon27Sun
28Mon1:582.92:282.78:140.08:250.25:407:35Full Moon28Mon
29Tue2:343.03:082.78:540.09:040.35:397:36Full Moon29Tue
30Wed3:123.03:492.79:350.09:450.35:387:37Waning Gibbous30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447504)

Common Questions About South Yarmouth, MA Tides

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What time does the tide turn (slack tide) in South Yarmouth, MA today?

Slack tide in South Yarmouth, MA is approximately 11:33 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 South Yarmouth, MA?

South Yarmouth, MA is currently in a transitional phase. Tonight's moon is 30% 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 South Yarmouth, 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 South Yarmouth, MA?

Tide predictions for South Yarmouth, 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 South Yarmouth, MA?

Tide data for South Yarmouth, MA is sourced from NOAA Station #8447504. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447504.

What is the moon phase in South Yarmouth, MA tonight?

Tonight the moon over South Yarmouth, MA is Waning Crescent (30% illuminated). This places South Yarmouth, 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