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 1h 31m 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 - May 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:502.69:252.62:370.63:060.45:377:38First Quarter1Thu
2Fri9:452.610:152.73:310.53:560.45:357:39Waxing Gibbous2Fri
3Sat10:382.711:022.84:240.34:460.35:347:40Waxing Gibbous3Sat
4Sun11:282.711:473.05:150.25:330.25:337:41Waxing Gibbous4Sun
5Mon12:162.86:040.06:190.15:327:42Full Moon5Mon
6Tue12:313.21:032.96:51-0.27:050.05:307:43Full Moon6Tue
7Wed1:153.31:503.07:39-0.37:52-0.15:297:44Full Moon7Wed
8Thu2:023.42:403.08:27-0.48:40-0.15:287:46Full Moon8Thu
9Fri2:513.43:313.09:17-0.49:31-0.15:277:47Waning Gibbous9Fri
10Sat3:423.44:243.010:08-0.410:230.05:267:48Waning Gibbous10Sat
11Sun4:363.35:192.911:01-0.311:190.15:257:49Waning Gibbous11Sun
12Mon5:333.26:182.911:57-0.25:247:50Third Quarter12Mon
13Tue6:343.17:202.912:190.112:56-0.15:227:51Third Quarter13Tue
14Wed7:393.08:222.91:220.21:560.05:217:52Third Quarter14Wed
15Thu8:442.99:232.92:260.22:560.15:207:53Waning Crescent15Thu
16Fri9:492.810:223.03:300.23:550.25:197:54Waning Crescent16Fri
17Sat10:522.811:163.04:320.14:510.25:197:55Waning Crescent17Sat
18Sun11:482.85:300.15:430.25:187:56Waning Crescent18Sun
19Mon12:043.012:382.86:210.06:300.25:177:57New Moon19Mon
20Tue12:483.11:232.87:070.07:140.35:167:58New Moon20Tue
21Wed1:293.12:062.77:490.07:550.35:157:59New Moon21Wed
22Thu2:093.02:472.78:300.08:360.35:148:00New Moon22Thu
23Fri2:493.03:272.79:110.09:170.45:148:00Waxing Crescent23Fri
24Sat3:303.04:082.69:510.19:590.45:138:01Waxing Crescent24Sat
25Sun4:112.94:492.610:320.110:420.55:128:02Waxing Crescent25Sun
26Mon4:532.85:322.611:140.211:270.55:118:03Waxing Crescent26Mon
27Tue5:382.86:162.611:580.35:118:04First Quarter27Tue
28Wed6:252.77:032.612:150.512:440.35:108:05First Quarter28Wed
29Thu7:152.67:512.61:060.51:320.35:108:06First Quarter29Thu
30Fri8:072.68:392.71:580.52:210.45:098:07First Quarter30Fri
31Sat9:012.69:282.82:510.43:110.35:098:07Waxing Gibbous31Sat
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