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 5h 57m 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 - Apr 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:103.05:462.711:340.011:500.26:227:06Third Quarter1Thu
2Fri6:002.96:412.612:280.06:207:07Third Quarter2Fri
3Sat6:572.97:402.612:460.31:260.16:187:08Third Quarter3Sat
4Sun7:592.98:432.71:470.32:270.16:177:09Third Quarter4Sun
5Mon9:042.99:462.82:500.23:280.06:157:10Waning Crescent5Mon
6Tue10:103.010:472.93:540.14:29-0.16:137:12Waning Crescent6Tue
7Wed11:133.111:443.14:56-0.15:26-0.26:127:13Waning Crescent7Wed
8Thu12:103.15:54-0.26:20-0.26:107:14New Moon8Thu
9Fri12:363.21:043.26:48-0.47:10-0.36:087:15New Moon9Fri
10Sat1:253.31:563.27:39-0.47:58-0.36:077:16New Moon10Sat
11Sun2:133.32:463.18:29-0.48:46-0.26:057:17New Moon11Sun
12Mon3:013.33:353.09:18-0.49:33-0.16:047:18Waxing Crescent12Mon
13Tue3:473.24:232.910:05-0.310:200.16:027:19Waxing Crescent13Tue
14Wed4:343.15:122.810:54-0.111:080.26:007:20Waxing Crescent14Wed
15Thu5:222.96:022.611:440.111:580.45:597:21First Quarter15Thu
16Fri6:142.86:562.512:360.25:577:22First Quarter16Fri
17Sat7:092.77:522.512:520.51:310.35:567:24First Quarter17Sat
18Sun8:062.68:472.51:490.52:260.45:547:25First Quarter18Sun
19Mon9:042.59:422.52:460.63:200.45:537:26First Quarter19Mon
20Tue10:012.610:332.63:420.54:120.45:517:27Waxing Gibbous20Tue
21Wed10:542.611:192.74:350.45:000.45:507:28Waxing Gibbous21Wed
22Thu11:422.75:250.35:440.35:487:29Waxing Gibbous22Thu
23Fri12:012.812:252.76:090.26:250.25:477:30Waxing Gibbous23Fri
24Sat12:402.91:062.86:510.17:050.25:457:31Full Moon24Sat
25Sun1:183.01:462.87:320.07:450.15:447:32Full Moon25Sun
26Mon1:563.12:272.88:14-0.18:260.15:427:33Full Moon26Mon
27Tue2:363.13:092.88:56-0.29:090.15:417:35Waning Gibbous27Tue
28Wed3:183.13:542.89:40-0.29:530.15:407:36Waning Gibbous28Wed
29Thu4:033.24:412.810:27-0.210:410.15:387:37Waning Gibbous29Thu
30Fri4:513.15:312.811:17-0.111:330.25:377:38Waning Gibbous30Fri
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