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 59m 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 - Aug 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:062.610:252.93:470.23:580.45:357:58Waning Crescent1Sun
2Mon11:072.611:212.94:490.24:560.45:367:57Waning Crescent2Mon
3Tue12:012.65:440.25:490.45:377:55Waning Crescent3Tue
4Wed12:112.912:472.66:320.16:360.35:387:54New Moon4Wed
5Thu12:552.91:282.77:130.17:190.35:397:53New Moon5Thu
6Fri1:363.02:072.77:520.18:000.35:407:52New Moon6Fri
7Sat2:152.92:442.78:290.18:400.35:417:50New Moon7Sat
8Sun2:542.93:212.89:060.19:190.25:427:49Waxing Crescent8Sun
9Mon3:322.93:582.89:430.19:590.35:437:48Waxing Crescent9Mon
10Tue4:112.84:352.810:200.210:400.35:457:47Waxing Crescent10Tue
11Wed4:512.75:132.810:590.211:230.35:467:45Waxing Crescent11Wed
12Thu5:332.75:542.811:410.35:477:44First Quarter12Thu
13Fri6:192.66:402.812:100.312:260.45:487:42First Quarter13Fri
14Sat7:092.57:292.81:000.31:150.45:497:41First Quarter14Sat
15Sun8:032.58:222.91:530.32:070.45:507:40First Quarter15Sun
16Mon9:002.59:192.92:490.33:030.45:517:38Waxing Gibbous16Mon
17Tue9:592.610:173.13:470.24:020.35:527:37Waxing Gibbous17Tue
18Wed10:582.711:153.24:450.05:000.15:537:35Waxing Gibbous18Wed
19Thu11:532.95:41-0.15:570.05:547:34Full Moon19Thu
20Fri12:113.312:463.16:34-0.36:52-0.25:557:32Full Moon20Fri
21Sat1:053.41:383.27:25-0.47:45-0.35:567:31Full Moon21Sat
22Sun1:593.52:303.38:16-0.58:38-0.45:577:29Waning Gibbous22Sun
23Mon2:533.43:223.49:06-0.49:32-0.45:587:28Waning Gibbous23Mon
24Tue3:473.44:133.49:56-0.410:25-0.35:597:26Waning Gibbous24Tue
25Wed4:413.25:063.310:47-0.211:20-0.26:007:24Waning Gibbous25Wed
26Thu5:373.06:003.211:40-0.16:017:23Third Quarter26Thu
27Fri6:362.96:583.012:18-0.112:360.16:027:21Third Quarter27Fri
28Sat7:372.77:592.91:180.11:350.36:037:20Third Quarter28Sat
29Sun8:402.69:002.82:200.22:340.46:047:18Third Quarter29Sun
30Mon9:432.510:012.83:220.33:340.46:057:16Waning Crescent30Mon
31Tue10:432.510:582.84:230.34:330.46:067:15Waning Crescent31Tue
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