Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in South Yarmouth, MA.
Next low tide (tomorrow) : in 5h 16m at 3:49 am (0.4 ft)
Next high tide (tomorrow) : 10:06 am (2.3 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 - Sep 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:272.76:472.812:110.212:280.46:077:14Third Quarter1Sun
2Mon7:232.57:402.71:060.31:200.56:087:12Third Quarter2Mon
3Tue8:202.48:352.72:020.42:140.66:097:10Third Quarter3Tue
4Wed9:182.49:312.73:000.43:090.66:107:09Waning Crescent4Wed
5Thu10:152.410:272.73:570.44:040.66:117:07Waning Crescent5Thu
6Fri11:092.511:192.84:510.44:570.66:127:05Waning Crescent6Fri
7Sat11:562.55:390.35:460.56:137:04Waning Crescent7Sat
8Sun12:042.812:382.66:220.26:300.46:147:02New Moon8Sun
9Mon12:462.91:162.77:010.17:110.36:157:00New Moon9Mon
10Tue1:263.01:532.87:390.17:520.26:166:58New Moon10Tue
11Wed2:063.02:302.98:170.08:330.16:176:57New Moon11Wed
12Thu2:453.03:083.08:560.09:150.06:186:55Waxing Crescent12Thu
13Fri3:273.03:473.09:360.09:580.06:196:53Waxing Crescent13Fri
14Sat4:093.04:283.110:170.010:440.06:206:52Waxing Crescent14Sat
15Sun4:552.95:133.111:020.111:340.06:216:50Waxing Crescent15Sun
16Mon5:452.86:033.111:510.26:226:48First Quarter16Mon
17Tue6:412.76:593.012:290.012:460.26:236:46First Quarter17Tue
18Wed7:422.78:003.01:290.11:460.36:246:45First Quarter18Wed
19Thu8:462.69:053.02:310.12:490.36:256:43Waxing Gibbous19Thu
20Fri9:522.710:103.13:340.13:520.36:266:41Waxing Gibbous20Fri
21Sat10:562.811:143.14:370.04:550.26:276:39Waxing Gibbous21Sat
22Sun11:542.95:36-0.15:540.06:286:38Waxing Gibbous22Sun
23Mon12:123.212:473.06:29-0.26:49-0.16:296:36Full Moon23Mon
24Tue1:053.21:353.17:18-0.27:40-0.26:306:34Full Moon24Tue
25Wed1:563.22:213.18:05-0.28:28-0.26:316:32Full Moon25Wed
26Thu2:453.13:063.18:50-0.19:16-0.16:326:31Waning Gibbous26Thu
27Fri3:323.03:493.19:340.010:02-0.16:336:29Waning Gibbous27Fri
28Sat4:182.94:333.010:180.210:480.16:346:27Waning Gibbous28Sat
29Sun5:052.85:172.911:030.311:370.26:356:26Waning Gibbous29Sun
30Mon5:542.66:052.811:500.56:366:24Third 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 6:57 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