Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Friday, July 31, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide : 9:08 pm (0.3 ft)
Next high tide : in 3h 19m at 3:14 pm (2.7 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 5:34 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Apr 2085

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:372.77:222.412:200.41:030.36:217:06First Quarter1Sun
2Mon7:352.68:212.31:160.52:010.46:207:07First Quarter2Mon
3Tue8:352.59:192.42:150.62:580.46:187:08First Quarter3Tue
4Wed9:352.510:152.43:130.63:540.46:167:10Waxing Gibbous4Wed
5Thu10:322.611:052.54:110.54:460.46:157:11Waxing Gibbous5Thu
6Fri11:232.611:482.65:040.45:310.36:137:12Waxing Gibbous6Fri
7Sat12:072.75:500.36:120.36:117:13Waxing Gibbous7Sat
8Sun12:272.712:482.76:330.26:500.26:107:14Full Moon8Sun
9Mon1:032.81:272.87:130.17:270.26:087:15Full Moon9Mon
10Tue1:392.92:062.87:530.08:050.16:067:16Full Moon10Tue
11Wed2:163.02:462.88:33-0.18:450.16:057:17Full Moon11Wed
12Thu2:543.03:272.89:14-0.19:260.26:037:18Waning Gibbous12Thu
13Fri3:353.14:102.79:58-0.110:090.26:027:19Waning Gibbous13Fri
14Sat4:183.14:572.710:44-0.110:560.26:007:20Waning Gibbous14Sat
15Sun5:073.05:492.611:350.011:490.35:597:22Third Quarter15Sun
16Mon6:013.06:462.612:310.05:577:23Third Quarter16Mon
17Tue7:012.97:472.612:490.31:300.15:557:24Third Quarter17Tue
18Wed8:052.98:502.71:520.32:310.15:547:25Third Quarter18Wed
19Thu9:112.99:522.82:560.23:310.05:527:26Waning Crescent19Thu
20Fri10:172.910:513.04:000.14:310.05:517:27Waning Crescent20Fri
21Sat11:193.011:453.15:020.05:27-0.15:497:28Waning Crescent21Sat
22Sun12:153.05:59-0.26:19-0.15:487:29New Moon22Sun
23Mon12:353.21:073.06:51-0.37:07-0.15:477:30New Moon23Mon
24Tue1:233.31:573.07:41-0.37:540.05:457:31New Moon24Tue
25Wed2:093.32:463.08:29-0.38:410.05:447:33New Moon25Wed
26Thu2:553.23:332.99:16-0.29:260.15:427:34Waxing Crescent26Thu
27Fri3:403.14:202.810:02-0.110:120.35:417:35Waxing Crescent27Fri
28Sat4:263.05:072.610:490.010:590.45:397:36Waxing Crescent28Sat
29Sun5:132.95:562.511:370.211:490.55:387:37Waxing Crescent29Sun
30Mon6:032.76:472.512:270.35:377:38First Quarter30Mon
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 6:11 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 spring phase. Tonight's moon is 96% 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 maximum.

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 Waning Gibbous (96% illuminated). This places South Yarmouth, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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