Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide (tomorrow) : 3:49 am (0.4 ft)
Next high tide : in 4h 12m at 9:22 pm (2.7 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Apr 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:343.01:543.17:41-0.18:04-0.26:227:06Full Moon1Mon
2Tue2:143.12:383.18:26-0.38:46-0.26:217:07Full Moon2Tue
3Wed2:563.23:243.19:11-0.39:30-0.26:197:08Waning Gibbous3Wed
4Thu3:403.24:123.09:59-0.310:16-0.16:177:09Waning Gibbous4Thu
5Fri4:273.25:022.910:49-0.311:060.06:167:10Waning Gibbous5Fri
6Sat5:183.25:582.811:43-0.26:147:11Third Quarter6Sat
7Sun6:143.16:592.712:010.112:42-0.16:127:12Third Quarter7Sun
8Mon7:163.08:052.61:010.21:450.06:117:13Third Quarter8Mon
9Tue8:232.99:132.62:050.32:500.16:097:14Third Quarter9Tue
10Wed9:322.910:202.73:110.33:550.16:077:15Waning Crescent10Wed
11Thu10:392.911:212.84:170.24:570.06:067:17Waning Crescent11Thu
12Fri11:412.95:190.15:520.06:047:18Waning Crescent12Fri
13Sat12:142.912:343.06:150.06:410.06:037:19New Moon13Sat
14Sun1:003.01:213.07:04-0.17:250.06:017:20New Moon14Sun
15Mon1:413.02:063.07:49-0.18:060.05:597:21New Moon15Mon
16Tue2:213.02:482.98:31-0.18:460.15:587:22New Moon16Tue
17Wed2:593.03:292.89:13-0.19:250.25:567:23Waxing Crescent17Wed
18Thu3:373.04:102.79:540.010:050.35:557:24Waxing Crescent18Thu
19Fri4:162.94:512.610:350.110:470.45:537:25Waxing Crescent19Fri
20Sat4:582.85:362.511:190.211:310.55:527:26Waxing Crescent20Sat
21Sun5:422.76:242.412:060.35:507:28First Quarter21Sun
22Mon6:312.67:162.412:190.612:570.45:497:29First Quarter22Mon
23Tue7:242.68:102.41:110.61:500.45:477:30First Quarter23Tue
24Wed8:202.69:042.42:060.62:430.45:467:31First Quarter24Wed
25Thu9:162.69:562.53:010.63:360.45:447:32Waxing Gibbous25Thu
26Fri10:112.710:462.63:560.54:280.35:437:33Waxing Gibbous26Fri
27Sat11:032.811:322.84:490.35:160.25:427:34Waxing Gibbous27Sat
28Sun11:532.95:400.16:020.15:407:35Waxing Gibbous28Sun
29Mon12:153.012:393.06:28-0.16:470.05:397:36Full Moon29Mon
30Tue12:583.21:263.17:15-0.27:32-0.15:387:37Full Moon30Tue
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 12:35 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 transitional phase. Tonight's moon is 71% 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 Waxing Gibbous (71% 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