Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide (tomorrow) : 12:25 am (0.2 ft)
Next high tide : in 1h 54m at 6:26 pm (2.9 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Oct 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:303.21:513.37:35-0.28:03-0.36:376:23Full Moon1Wed
2Thu2:193.12:373.38:22-0.18:52-0.36:386:21Waning Gibbous2Thu
3Fri3:083.03:223.29:070.09:39-0.26:396:19Waning Gibbous3Fri
4Sat3:552.94:073.19:530.110:260.06:406:18Waning Gibbous4Sat
5Sun4:422.84:533.010:390.311:140.16:416:16Waning Gibbous5Sun
6Mon5:312.75:422.911:260.46:426:14Third Quarter6Mon
7Tue6:232.56:342.712:040.212:180.56:446:13Third Quarter7Tue
8Wed7:172.57:302.712:580.41:120.66:456:11Third Quarter8Wed
9Thu8:132.48:262.61:530.42:080.66:466:09Third Quarter9Thu
10Fri9:082.59:232.62:470.53:040.66:476:08Waning Crescent10Fri
11Sat10:002.510:172.63:390.43:580.56:486:06Waning Crescent11Sat
12Sun10:492.611:062.74:290.44:490.46:496:04Waning Crescent12Sun
13Mon11:322.811:522.85:150.35:360.36:506:03Waning Crescent13Mon
14Tue12:122.95:570.26:200.26:516:01New Moon14Tue
15Wed12:342.812:503.06:370.27:020.06:526:00New Moon15Wed
16Thu1:152.91:283.17:170.17:44-0.16:535:58New Moon16Thu
17Fri1:562.92:083.27:580.18:28-0.26:555:57New Moon17Fri
18Sat2:392.92:503.28:410.19:12-0.26:565:55Waxing Crescent18Sat
19Sun3:242.93:353.29:250.19:59-0.26:575:53Waxing Crescent19Sun
20Mon4:122.94:233.210:130.110:49-0.16:585:52Waxing Crescent20Mon
21Tue5:032.85:163.111:040.211:43-0.16:595:50First Quarter21Tue
22Wed5:582.86:143.112:010.27:005:49First Quarter22Wed
23Thu6:592.77:173.012:410.01:030.37:025:48First Quarter23Thu
24Fri8:022.88:222.91:420.02:070.27:035:46First Quarter24Fri
25Sat9:062.89:282.92:430.13:110.27:045:45Waxing Gibbous25Sat
26Sun10:072.910:322.93:440.04:140.17:055:43Waxing Gibbous26Sun
27Mon11:043.011:323.04:420.05:140.07:065:42Waxing Gibbous27Mon
28Tue11:563.15:360.06:09-0.17:075:41Full Moon28Tue
29Wed12:263.012:443.26:260.06:59-0.27:095:39Full Moon29Wed
30Thu1:153.01:293.27:130.07:46-0.27:105:38Full Moon30Thu
31Fri2:022.92:123.27:580.18:31-0.27:115:37Full Moon31Fri
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 9:25 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 37% 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 First Quarter (37% 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