Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide (tomorrow) : 1:26 am (0.3 ft)
Next high tide : in 4h 16m at 7:22 pm (2.9 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Apr 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:303.53:023.38:46-0.69:07-0.46:227:06Waxing Crescent1Fri
2Sat3:213.53:543.29:38-0.69:57-0.36:207:07Waxing Crescent2Sat
3Sun4:123.44:483.110:30-0.410:48-0.16:197:08Waxing Crescent3Sun
4Mon5:043.25:432.911:24-0.311:420.16:177:09Waxing Crescent4Mon
5Tue6:003.16:422.712:21-0.16:157:10First Quarter5Tue
6Wed6:592.97:442.612:400.21:210.16:147:11First Quarter6Wed
7Thu8:022.78:472.51:400.42:230.26:127:12First Quarter7Thu
8Fri9:052.79:482.52:420.43:230.36:107:13Waxing Gibbous8Fri
9Sat10:072.610:442.63:440.44:220.36:097:15Waxing Gibbous9Sat
10Sun11:042.711:332.74:420.45:140.36:077:16Waxing Gibbous10Sun
11Mon11:532.75:340.35:580.36:067:17Waxing Gibbous11Mon
12Tue12:152.712:352.76:180.26:370.26:047:18Waxing Gibbous12Tue
13Wed12:522.81:142.86:580.17:140.26:027:19Full Moon13Wed
14Thu1:282.91:522.87:370.17:510.26:017:20Full Moon14Thu
15Fri2:042.92:302.88:150.08:270.25:597:21Full Moon15Fri
16Sat2:392.93:072.78:530.09:050.25:587:22Full Moon16Sat
17Sun3:152.93:462.79:320.09:440.25:567:23Waning Gibbous17Sun
18Mon3:532.94:262.710:120.010:240.35:557:24Waning Gibbous18Mon
19Tue4:332.95:082.610:550.111:080.35:537:26Waning Gibbous19Tue
20Wed5:172.95:552.611:410.111:570.45:517:27Waning Gibbous20Wed
21Thu6:062.96:472.612:330.15:507:28Third Quarter21Thu
22Fri7:012.97:432.612:510.41:280.15:497:29Third Quarter22Fri
23Sat8:002.98:412.71:500.32:250.15:477:30Third Quarter23Sat
24Sun9:022.99:402.92:500.23:230.05:467:31Waning Crescent24Sun
25Mon10:043.010:383.03:520.14:210.05:447:32Waning Crescent25Mon
26Tue11:053.111:343.24:52-0.15:18-0.15:437:33Waning Crescent26Tue
27Wed12:033.25:49-0.36:12-0.25:417:34New Moon27Wed
28Thu12:263.412:583.26:44-0.47:03-0.35:407:35New Moon28Thu
29Fri1:173.51:513.27:36-0.57:54-0.35:397:36New Moon29Fri
30Sat2:083.52:443.28:28-0.58:44-0.25:377:38New Moon30Sat
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 10:24 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 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