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 4h 00m 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 - Mar 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:292.67:082.312:090.412:520.36:155:30First Quarter1Sat
2Sun7:252.68:072.31:040.51:500.46:135:32First Quarter2Sun
3Mon8:242.59:062.32:000.52:470.46:125:33Waxing Gibbous3Mon
4Tue9:212.610:002.42:570.53:430.46:105:34Waxing Gibbous4Tue
5Wed10:142.610:482.53:520.44:310.36:085:35Waxing Gibbous5Wed
6Thu11:012.711:292.64:410.35:140.26:075:36Waxing Gibbous6Thu
7Fri11:432.85:250.25:540.16:055:37Full Moon7Fri
8Sat12:082.712:222.96:070.16:320.06:035:39Full Moon8Sat
9Sun12:452.82:022.97:480.08:10-0.17:026:40Full Moon9Sun
10Mon2:222.92:423.08:29-0.18:49-0.17:006:41Full Moon10Mon
11Tue3:003.03:232.99:11-0.29:30-0.16:586:42Waning Gibbous11Tue
12Wed3:403.14:062.99:55-0.210:12-0.16:576:43Waning Gibbous12Wed
13Thu4:223.14:522.810:42-0.210:580.06:556:44Waning Gibbous13Thu
14Fri5:093.15:432.711:32-0.111:490.16:536:45Third Quarter14Fri
15Sat6:013.06:402.612:28-0.16:526:46Third Quarter15Sat
16Sun7:003.07:432.612:460.21:290.06:506:48Third Quarter16Sun
17Mon8:042.98:492.61:480.22:320.06:486:49Third Quarter17Mon
18Tue9:112.99:562.62:520.23:360.06:476:50Waning Crescent18Tue
19Wed10:182.911:002.83:580.24:390.06:456:51Waning Crescent19Wed
20Thu11:223.011:572.95:010.05:38-0.16:436:52Waning Crescent20Thu
21Fri12:193.16:00-0.16:30-0.26:426:53New Moon21Fri
22Sat12:483.01:113.16:53-0.27:18-0.26:406:54New Moon22Sat
23Sun1:353.11:593.17:42-0.38:03-0.26:386:55New Moon23Sun
24Mon2:193.12:463.08:29-0.38:47-0.16:366:57New Moon24Mon
25Tue3:023.13:302.99:14-0.29:300.06:356:58Waxing Crescent25Tue
26Wed3:443.14:142.89:58-0.210:120.16:336:59Waxing Crescent26Wed
27Thu4:263.04:582.710:430.010:560.26:317:00Waxing Crescent27Thu
28Fri5:092.95:452.611:290.111:420.46:307:01Waxing Crescent28Fri
29Sat5:562.76:352.412:180.36:287:02First Quarter29Sat
30Sun6:472.67:282.412:320.51:110.46:267:03First Quarter30Sun
31Mon7:422.68:242.31:250.62:060.46:257:04First Quarter31Mon
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