Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in South Yarmouth, MA.
Next low tide : in 3h 45m at 12:02 pm (-0.1 ft)
Next high tide : 6:26 pm (2.9 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Aug 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:082.58:292.71:550.42:080.55:357:58Third Quarter1Sun
2Mon9:042.49:212.72:500.52:590.65:367:57Waning Crescent2Mon
3Tue10:002.310:132.73:450.53:510.65:377:56Waning Crescent3Tue
4Wed10:562.411:052.74:400.44:430.65:387:55Waning Crescent4Wed
5Thu11:472.411:522.85:310.45:330.65:397:53Waning Crescent5Thu
6Fri12:332.56:170.36:190.55:407:52Waning Crescent6Fri
7Sat12:362.91:152.57:000.27:030.45:417:51New Moon7Sat
8Sun1:193.01:562.67:410.17:460.35:427:50New Moon8Sun
9Mon2:003.02:362.78:210.08:290.25:437:48New Moon9Mon
10Tue2:423.13:162.89:02-0.19:130.15:447:47Waxing Crescent10Tue
11Wed3:253.13:572.99:43-0.19:580.15:457:46Waxing Crescent11Wed
12Thu4:103.14:393.010:25-0.110:460.05:467:44Waxing Crescent12Thu
13Fri4:563.05:243.011:100.011:360.05:477:43Waxing Crescent13Fri
14Sat5:462.96:123.111:580.05:487:41First Quarter14Sat
15Sun6:412.87:063.112:310.012:500.15:497:40First Quarter15Sun
16Mon7:412.78:033.11:300.11:470.25:507:39First Quarter16Mon
17Tue8:432.69:043.12:310.12:460.35:517:37Waxing Gibbous17Tue
18Wed9:492.610:073.13:340.13:480.35:527:36Waxing Gibbous18Wed
19Thu10:552.611:103.14:370.04:500.35:537:34Waxing Gibbous19Thu
20Fri11:562.75:39-0.15:500.25:547:33Waxing Gibbous20Fri
21Sat12:093.212:522.86:34-0.16:450.15:557:31Full Moon21Sat
22Sun1:033.21:432.97:25-0.27:370.15:567:30Full Moon22Sun
23Mon1:543.22:302.98:13-0.18:260.15:577:28Full Moon23Mon
24Tue2:433.13:152.98:58-0.19:140.15:587:26Waning Gibbous24Tue
25Wed3:303.13:572.99:410.09:590.16:007:25Waning Gibbous25Wed
26Thu4:152.94:392.910:220.110:450.26:017:23Waning Gibbous26Thu
27Fri4:592.85:202.811:050.211:320.36:027:22Waning Gibbous27Fri
28Sat5:462.76:042.711:480.46:037:20Third Quarter28Sat
29Sun6:352.56:522.712:210.412:350.56:047:18Third Quarter29Sun
30Mon7:282.47:432.61:130.41:250.66:057:17Third Quarter30Mon
31Tue8:232.38:362.62:070.52:170.76:067:15Third Quarter31Tue
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 3:14 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 South Yarmouth, MA?

South Yarmouth, MA is currently in a transitional phase. Tonight's moon is 37% 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 First Quarter (37% 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