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 37m 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 - Jul 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:413.05:162.810:560.111:140.35:108:19Waxing Crescent1Fri
2Sat5:272.86:012.711:410.25:108:18First Quarter2Sat
3Sun6:152.76:472.712:020.412:270.35:118:18First Quarter3Sun
4Mon7:052.67:352.712:530.41:150.45:128:18First Quarter4Mon
5Tue7:572.58:242.71:450.52:030.45:128:18First Quarter5Tue
6Wed8:502.59:132.72:380.52:520.55:138:17First Quarter6Wed
7Thu9:442.410:032.83:310.43:420.55:148:17Waxing Gibbous7Thu
8Fri10:372.510:522.84:240.44:330.55:148:17Waxing Gibbous8Fri
9Sat11:292.511:392.95:140.35:230.45:158:16Waxing Gibbous9Sat
10Sun12:162.66:020.26:100.35:168:16Full Moon10Sun
11Mon12:253.01:012.76:480.06:570.25:168:15Full Moon11Mon
12Tue1:093.11:462.87:33-0.17:430.15:178:15Full Moon12Tue
13Wed1:553.22:322.98:18-0.28:300.05:188:14Full Moon13Wed
14Thu2:423.33:183.09:04-0.39:190.05:198:14Waning Gibbous14Thu
15Fri3:303.34:063.19:50-0.310:09-0.15:208:13Waning Gibbous15Fri
16Sat4:203.34:543.110:38-0.311:01-0.15:208:12Waning Gibbous16Sat
17Sun5:123.25:463.111:28-0.211:57-0.15:218:12Third Quarter17Sun
18Mon6:083.16:403.112:21-0.15:228:11Third Quarter18Mon
19Tue7:072.97:373.112:550.01:170.05:238:10Third Quarter19Tue
20Wed8:082.88:363.11:560.02:150.15:248:10Third Quarter20Wed
21Thu9:122.89:373.12:570.03:140.15:258:09Waning Crescent21Thu
22Fri10:172.710:383.14:000.04:140.25:268:08Waning Crescent22Fri
23Sat11:202.711:363.15:020.05:130.25:278:07Waning Crescent23Sat
24Sun12:172.85:590.06:080.25:278:06New Moon24Sun
25Mon12:293.11:082.86:50-0.16:590.25:288:05New Moon25Mon
26Tue1:183.11:552.87:38-0.17:470.25:298:04New Moon26Tue
27Wed2:043.12:392.88:22-0.18:320.25:308:03New Moon27Wed
28Thu2:483.13:212.89:030.09:160.25:318:02Waxing Crescent28Thu
29Fri3:313.04:012.89:440.09:590.25:328:01Waxing Crescent29Fri
30Sat4:132.94:412.810:240.110:420.35:338:00Waxing Crescent30Sat
31Sun4:552.85:212.811:050.211:270.35:347:59Waxing Crescent31Sun
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