41.6650’ N, 70.1833’ W

South Yarmouth, MA

64°
H -°
L 63°
SW
1mph
High tide
6:01 am

Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Thursday, September 17, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide : 11:56 am (0.5 ft)
Next high tide : in 2h 34m at 6:01 am (2.5 ft)
Sunset today : 6:47 pm
Sunrise tomorrow : 6:23 am
Moon phase : First Quarter (39% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Apr 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:222.76:082.311:500.35:236:05First Quarter1Tue
2Wed6:192.67:072.312:010.612:480.45:216:07First Quarter2Wed
3Thu7:192.58:062.312:590.71:460.55:196:08First Quarter3Thu
4Fri8:192.59:032.31:580.72:430.55:186:09Waxing Gibbous4Fri
5Sat9:172.59:552.42:560.63:360.45:166:10Waxing Gibbous5Sat
6Sun10:102.610:392.63:500.54:220.45:146:11Waxing Gibbous6Sun
7Mon10:562.711:182.74:390.45:030.35:136:12Waxing Gibbous7Mon
8Tue11:372.711:552.85:220.25:420.25:116:13Full Moon8Tue
9Wed12:172.86:030.16:190.25:096:14Full Moon9Wed
10Thu12:302.912:562.86:430.06:570.15:086:15Full Moon10Thu
11Fri1:073.01:362.87:24-0.17:360.15:066:16Full Moon11Fri
12Sat1:453.12:182.88:06-0.18:170.15:056:17Waning Gibbous12Sat
13Sun2:263.13:032.78:50-0.19:010.25:036:19Waning Gibbous13Sun
14Mon3:103.13:502.79:37-0.19:480.25:016:20Waning Gibbous14Mon
15Tue3:593.14:432.610:290.010:420.35:006:21Third Quarter15Tue
16Wed4:543.05:422.511:260.011:420.44:586:22Third Quarter16Wed
17Thu5:562.96:462.512:280.14:576:23Third Quarter17Thu
18Fri7:022.97:512.612:470.41:310.14:556:24Third Quarter18Fri
19Sat8:102.98:552.71:530.32:330.14:546:25Waning Crescent19Sat
20Sun9:172.99:552.92:590.23:330.14:526:26Waning Crescent20Sun
21Mon10:202.910:483.04:010.14:280.04:516:27Waning Crescent21Mon
22Tue11:153.011:363.14:58-0.15:190.04:496:28New Moon22Tue
23Wed12:063.05:50-0.26:060.04:486:29New Moon23Wed
24Thu12:213.212:553.06:38-0.36:510.04:466:31New Moon24Thu
25Fri1:053.21:412.97:25-0.27:350.14:456:32New Moon25Fri
26Sat1:483.22:272.88:10-0.28:190.24:436:33Waxing Crescent26Sat
27Sun3:313.14:112.79:54-0.110:020.35:427:34Waxing Crescent27Sun
28Mon4:153.04:572.610:390.110:470.45:407:35Waxing Crescent28Mon
29Tue5:002.85:442.511:260.211:350.55:397:36Waxing Crescent29Tue
30Wed5:492.76:352.412:160.35:387:37First Quarter30Wed
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 transitional phase. Tonight's moon is 39% 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 (39% 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