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 (tomorrow) : 1:26 am (0.3 ft)
Next high tide : in 1h 59m at 7:22 pm (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 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:183.14:592.810:38-0.110:530.25:088:08Waxing Crescent1Wed
2Thu5:083.05:492.811:270.011:440.45:088:09Waxing Crescent2Thu
3Fri5:592.96:392.712:170.25:078:10First Quarter3Fri
4Sat6:522.77:312.712:380.41:080.35:078:11First Quarter4Sat
5Sun7:462.68:212.71:330.51:590.45:068:11First Quarter5Sun
6Mon8:412.59:122.72:270.52:490.45:068:12First Quarter6Mon
7Tue9:362.510:012.73:220.53:380.55:068:13Waxing Gibbous7Tue
8Wed10:292.510:492.84:150.44:280.55:068:13Waxing Gibbous8Wed
9Thu11:202.511:342.95:050.35:150.45:068:14Waxing Gibbous9Thu
10Fri12:072.65:520.26:000.45:058:14Waxing Gibbous10Fri
11Sat12:162.912:502.66:360.16:430.35:058:15Full Moon11Sat
12Sun12:573.01:322.77:180.17:260.35:058:15Full Moon12Sun
13Mon1:383.12:152.78:000.08:090.25:058:16Full Moon13Mon
14Tue2:203.12:582.88:43-0.18:530.25:058:16Full Moon14Tue
15Wed3:043.23:422.89:27-0.19:400.25:058:17Waning Gibbous15Wed
16Thu3:503.24:282.910:12-0.210:280.15:058:17Waning Gibbous16Thu
17Fri4:383.25:162.910:59-0.211:190.15:058:17Waning Gibbous17Fri
18Sat5:293.16:073.011:50-0.15:058:18Third Quarter18Sat
19Sun6:243.07:013.012:140.112:43-0.15:068:18Third Quarter19Sun
20Mon7:233.07:583.11:130.11:380.05:068:18Third Quarter20Mon
21Tue8:242.98:553.12:130.12:350.05:068:18Third Quarter21Tue
22Wed9:262.89:543.23:140.03:330.15:068:18Waning Crescent22Wed
23Thu10:302.810:533.24:160.04:320.15:078:19Waning Crescent23Thu
24Fri11:312.811:493.35:16-0.15:290.15:078:19Waning Crescent24Fri
25Sat12:282.96:12-0.26:230.15:078:19New Moon25Sat
26Sun12:423.31:212.97:05-0.27:150.15:088:19New Moon26Sun
27Mon1:323.32:122.97:55-0.28:050.15:088:19New Moon27Mon
28Tue2:213.23:012.98:42-0.28:530.15:088:19New Moon28Tue
29Wed3:093.23:472.89:28-0.19:400.25:098:19Waxing Crescent29Wed
30Thu3:553.14:322.810:130.010:270.35:098:19Waxing Crescent30Thu
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 10:24 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 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