Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide : 12:57 pm (0.1 ft)
Next high tide : in 3h 33m at 6:43 am (2.9 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Jun 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:313.08:103.01:180.11:470.05:088:09Third Quarter1Tue
2Wed8:342.99:093.02:200.12:450.05:078:09Waning Crescent2Wed
3Thu9:382.810:083.13:220.13:430.15:078:10Waning Crescent3Thu
4Fri10:412.811:043.14:240.04:410.15:078:11Waning Crescent4Fri
5Sat11:412.811:573.25:230.05:360.15:068:11Waning Crescent5Sat
6Sun12:342.86:17-0.16:270.25:068:12New Moon6Sun
7Mon12:463.21:242.87:07-0.17:150.25:068:13New Moon7Mon
8Tue1:323.22:112.87:53-0.18:010.25:068:13New Moon8Tue
9Wed2:163.12:562.88:38-0.18:450.35:068:14New Moon9Wed
10Thu3:003.13:392.79:210.09:290.35:058:14Waxing Crescent10Thu
11Fri3:433.04:212.710:030.010:130.45:058:15Waxing Crescent11Fri
12Sat4:262.95:032.710:450.110:580.45:058:15Waxing Crescent12Sat
13Sun5:102.85:462.711:280.211:450.55:058:16Waxing Crescent13Sun
14Mon5:562.76:322.612:120.35:058:16First Quarter14Mon
15Tue6:442.67:192.612:340.512:590.35:058:17First Quarter15Tue
16Wed7:352.68:062.71:250.51:460.45:058:17First Quarter16Wed
17Thu8:272.58:542.72:170.52:350.45:058:17First Quarter17Thu
18Fri9:202.59:432.83:090.43:240.45:068:18Waxing Gibbous18Fri
19Sat10:142.510:322.94:020.44:140.45:068:18Waxing Gibbous19Sat
20Sun11:062.611:213.04:540.25:050.35:068:18Waxing Gibbous20Sun
21Mon11:572.75:450.15:550.25:068:18Waxing Gibbous21Mon
22Tue12:083.212:462.86:34-0.16:440.15:068:19Full Moon22Tue
23Wed12:563.31:352.97:23-0.27:330.05:078:19Full Moon23Wed
24Thu1:453.42:252.98:11-0.38:240.05:078:19Full Moon24Thu
25Fri2:363.43:163.09:00-0.49:15-0.15:078:19Waning Gibbous25Fri
26Sat3:283.44:073.19:50-0.410:08-0.15:088:19Waning Gibbous26Sat
27Sun4:213.45:003.110:41-0.411:03-0.15:088:19Waning Gibbous27Sun
28Mon5:163.25:543.111:34-0.35:098:19Third Quarter28Mon
29Tue6:143.16:513.112:010.012:29-0.25:098:19Third Quarter29Tue
30Wed7:153.07:493.11:010.01:250.05:108:19Third Quarter30Wed
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 9:50 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 neap phase. Tonight's moon is 48% 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 minimum.

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 First Quarter (48% illuminated). This places South Yarmouth, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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