41.6650’ N, 70.1833’ W

South Yarmouth, MA

72°
H 74°
L 55°
N
8mph
Low tide
12:47 pm

Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Friday, September 18, 2026
The tide is currently falling in South Yarmouth, MA.
Next low tide : in 1h 03m at 12:47 pm (0.7 ft)
Next high tide : 7:04 pm (2.6 ft)
Sunset today : 6:45 pm
Sunrise tomorrow : 6:24 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Nov 1951

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:282.91:373.37:280.08:05-0.36:124:36Waxing Crescent1Thu
2Fri2:172.92:263.38:150.18:55-0.36:134:35Waxing Crescent2Fri
3Sat3:082.83:183.39:050.19:48-0.26:144:34Waxing Crescent3Sat
4Sun4:032.74:143.210:000.210:45-0.16:154:32First Quarter4Sun
5Mon5:032.75:163.011:000.311:460.06:164:31First Quarter5Mon
6Tue6:082.66:222.912:050.46:184:30First Quarter6Tue
7Wed7:142.77:312.812:490.11:120.46:194:29First Quarter7Wed
8Thu8:172.78:382.81:510.12:190.36:204:28Waxing Gibbous8Thu
9Fri9:172.89:422.82:510.23:230.26:214:27Waxing Gibbous9Fri
10Sat10:112.910:392.83:480.24:220.16:234:26Waxing Gibbous10Sat
11Sun10:593.011:302.84:390.25:130.06:244:25Waxing Gibbous11Sun
12Mon11:423.15:250.26:000.06:254:24Full Moon12Mon
13Tue12:152.812:233.16:080.26:43-0.16:264:23Full Moon13Tue
14Wed12:592.71:023.06:490.37:250.06:274:22Full Moon14Wed
15Thu1:412.71:423.07:290.38:060.06:294:21Waning Gibbous15Thu
16Fri2:222.62:222.98:100.48:480.16:304:20Waning Gibbous16Fri
17Sat3:042.53:042.88:520.59:300.26:314:19Waning Gibbous17Sat
18Sun3:472.53:482.89:350.610:140.36:324:18Waning Gibbous18Sun
19Mon4:322.44:352.710:220.611:010.36:344:18Waning Gibbous19Mon
20Tue5:212.45:252.611:120.711:500.46:354:17Third Quarter20Tue
21Wed6:112.46:182.612:050.76:364:16Third Quarter21Wed
22Thu7:012.47:112.512:400.412:590.66:374:16Third Quarter22Thu
23Fri7:492.58:052.51:290.41:530.56:384:15Third Quarter23Fri
24Sat8:362.68:582.62:170.42:460.46:394:14Waning Crescent24Sat
25Sun9:232.89:502.63:050.33:390.26:414:14Waning Crescent25Sun
26Mon10:083.010:402.73:530.24:290.06:424:13Waning Crescent26Mon
27Tue10:543.111:292.84:410.25:18-0.16:434:13New Moon27Tue
28Wed11:393.35:280.16:07-0.36:444:12New Moon28Wed
29Thu12:172.812:273.46:160.06:56-0.46:454:12New Moon29Thu
30Fri1:082.81:173.47:050.07:47-0.46:464:12Waxing Crescent30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447504)

Common Questions About South Yarmouth, MA Tides

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Is this week a spring tide or neap tide in South Yarmouth, MA?

South Yarmouth, MA is currently in a neap phase. Tonight's moon is 48% 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 minimum.

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 (48% illuminated). This places South Yarmouth, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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