Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Monday, August 3, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide : 11:17 pm (0.2 ft)
Next high tide : in 5h 16m at 5:06 pm (2.9 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:37 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Sep 2090

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:232.87:463.01:040.01:230.26:077:13First Quarter1Fri
2Sat8:272.78:482.92:060.12:240.36:087:11First Quarter2Sat
3Sun9:322.69:512.93:090.23:250.46:097:10Waxing Gibbous3Sun
4Mon10:352.610:502.94:120.24:250.46:107:08Waxing Gibbous4Mon
5Tue11:302.611:432.95:100.25:210.46:117:06Waxing Gibbous5Tue
6Wed12:172.76:000.26:100.36:127:05Waxing Gibbous6Wed
7Thu12:292.912:592.76:420.16:530.26:137:03Full Moon7Thu
8Fri1:102.91:362.87:200.17:340.26:147:01Full Moon8Fri
9Sat1:492.92:122.87:570.18:130.26:157:00Full Moon9Sat
10Sun2:272.92:482.88:330.18:520.26:166:58Full Moon10Sun
11Mon3:052.93:232.99:100.29:310.26:176:56Waning Gibbous11Mon
12Tue3:432.84:002.89:470.210:100.26:186:54Waning Gibbous12Tue
13Wed4:222.74:372.810:260.310:510.26:196:53Waning Gibbous13Wed
14Thu5:032.75:182.811:060.311:360.36:206:51Waning Gibbous14Thu
15Fri5:472.66:022.811:500.46:216:49Third Quarter15Fri
16Sat6:362.56:512.812:240.312:390.46:226:47Third Quarter16Sat
17Sun7:292.57:452.81:170.31:330.56:236:46Third Quarter17Sun
18Mon8:262.58:432.92:130.32:290.46:246:44Third Quarter18Mon
19Tue9:242.69:423.03:100.23:280.36:256:42Waning Crescent19Tue
20Wed10:222.810:423.14:080.14:280.26:266:40Waning Crescent20Wed
21Thu11:182.911:393.25:05-0.15:250.06:276:39Waning Crescent21Thu
22Fri12:113.15:58-0.26:20-0.26:286:37New Moon22Fri
23Sat12:343.31:023.36:50-0.37:14-0.46:306:35New Moon23Sat
24Sun1:273.41:533.47:40-0.48:06-0.56:316:34New Moon24Sun
25Mon2:203.42:443.58:30-0.48:58-0.56:326:32Waxing Crescent25Mon
26Tue3:143.33:353.59:21-0.39:51-0.46:336:30Waxing Crescent26Tue
27Wed4:083.24:273.410:12-0.210:45-0.36:346:28Waxing Crescent27Wed
28Thu5:033.15:213.211:040.011:40-0.26:356:27First Quarter28Thu
29Fri6:002.96:183.111:590.16:366:25First Quarter29Fri
30Sat7:022.87:192.912:390.012:580.36:376:23First Quarter30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447504)

Common Questions About South Yarmouth, MA Tides

Show All
What time does the tide turn (slack tide) in South Yarmouth, MA today?

Slack tide in South Yarmouth, MA is approximately 8:11 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 transitional phase. Tonight's moon is 75% 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 Waning Gibbous (75% 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