Tides Today & Tomorrow in South Yarmouth, MA

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in South Yarmouth, MA.
Next low tide (tomorrow) : 3:49 am (0.4 ft)
Next high tide : in 2h 05m at 9:22 pm (2.7 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8447504
Common Questions About Tides

South Yarmouth, MA Tides - Jun 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:573.53:403.09:24-0.59:38-0.15:088:08Waning Gibbous1Sat
2Sun3:513.54:363.010:17-0.410:330.05:088:09Waning Gibbous2Sun
3Mon4:473.35:342.911:12-0.311:310.15:078:10Waning Gibbous3Mon
4Tue5:463.26:342.912:10-0.25:078:11Third Quarter4Tue
5Wed6:493.07:362.912:320.21:100.05:078:11Third Quarter5Wed
6Thu7:532.98:372.81:360.32:090.15:068:12Third Quarter6Thu
7Fri8:582.89:362.92:400.33:080.25:068:13Waning Crescent7Fri
8Sat10:012.710:322.93:420.34:040.35:068:13Waning Crescent8Sat
9Sun11:002.711:222.94:430.24:580.35:068:14Waning Crescent9Sun
10Mon11:532.75:370.25:460.35:068:14Waning Crescent10Mon
11Tue12:072.912:402.76:250.16:300.45:058:15New Moon11Tue
12Wed12:473.01:222.77:070.17:110.45:058:15New Moon12Wed
13Thu1:263.02:032.67:470.17:510.45:058:16New Moon13Thu
14Fri2:053.02:432.68:270.18:310.45:058:16New Moon14Fri
15Sat2:442.93:232.69:060.19:110.45:058:17New Moon15Sat
16Sun3:232.94:032.69:450.19:520.55:058:17Waxing Crescent16Sun
17Mon4:032.94:432.610:250.210:340.55:058:17Waxing Crescent17Mon
18Tue4:442.85:242.611:060.211:180.55:068:18Waxing Crescent18Tue
19Wed5:282.86:082.611:500.25:068:18Waxing Crescent19Wed
20Thu6:142.86:532.612:050.512:350.25:068:18First Quarter20Thu
21Fri7:042.77:402.712:550.51:230.35:068:18First Quarter21Fri
22Sat7:562.78:292.81:480.42:120.25:068:19First Quarter22Sat
23Sun8:512.79:192.92:430.33:030.25:078:19Waxing Gibbous23Sun
24Mon9:472.710:123.13:380.23:570.25:078:19Waxing Gibbous24Mon
25Tue10:452.811:053.24:350.04:510.15:078:19Waxing Gibbous25Tue
26Wed11:422.911:583.45:32-0.15:450.05:088:19Waxing Gibbous26Wed
27Thu12:382.96:26-0.36:390.05:088:19Full Moon27Thu
28Fri12:513.51:333.07:20-0.47:32-0.15:098:19Full Moon28Fri
29Sat1:453.52:293.08:14-0.58:26-0.15:098:19Full Moon29Sat
30Sun2:403.53:253.09:07-0.59:21-0.15:098:19Waning Gibbous30Sun
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 12:35 am — 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 71% 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 Waxing Gibbous (71% 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