South Yarmouth, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Aug 17 		Light Rain
Close Hourly 		72º / 68º 81% SE 11 mph 89%
4pm Few Showers 70º 32% SE 8 mph 90%
5pm Few Showers 70º 32% SE 8 mph 92%
6pm Cloudy 71º 24% ESE 7 mph 92%
7pm Showers 71º 38% ESE 8 mph 88%
8pm Showers 71º 36% E 6 mph 92%
9pm Cloudy 70º 14% E 6 mph 98%
10pm Cloudy 69º 8% ENE 5 mph 100%
11pm Cloudy 69º 24% ENE 5 mph 100%
Tue
Aug 18 		AM Clouds/PM Sun
View Hourly 		78º / 67º 20% N 10 mph 83%
12am Cloudy 69º 19% NE 5 mph 100%
1am Showers 69º 35% NE 4 mph 100%
2am Few Showers 70º 32% NE 4 mph 98%
3am Few Showers 70º 32% NNE 5 mph 98%
4am Cloudy 70º 24% NNE 6 mph 97%
5am Cloudy 70º 24% NNE 6 mph 97%
6am Cloudy 69º 24% NNE 6 mph 97%
7am Cloudy 69º 20% N 6 mph 99%
8am Cloudy 71º 21% N 8 mph 93%
9am Mostly Cloudy 72º 21% N 8 mph 90%
10am Mostly Cloudy 73º 20% N 8 mph 88%
11am Mostly Cloudy 74º 20% N 9 mph 86%
12pm Mostly Cloudy 75º 18% N 9 mph 83%
1pm Partly Cloudy 76º 5% N 9 mph 79%
2pm Partly Cloudy 77º 5% N 10 mph 75%
3pm Partly Cloudy 77º 5% N 7 mph 75%
4pm Partly Cloudy 77º 5% N 7 mph 75%
5pm Partly Cloudy 76º 5% N 6 mph 76%
6pm Partly Cloudy 75º 6% N 4 mph 78%
7pm Partly Cloudy 74º 20% N 3 mph 82%
8pm Partly Cloudy 72º 21% N 1 mph 88%
9pm Partly Cloudy 70º 24% WSW 1 mph 92%
10pm Partly Cloudy 70º 21% W 1 mph 94%
11pm Mostly Cloudy 70º 21% W 1 mph 95%
Wed
Aug 19 		Mostly Sunny
View Hourly 		80º / 69º 20% WSW 10 mph 75%
12am Cloudy 70º 21% WSW 2 mph 95%
1am Partly Cloudy 70º 17% WSW 1 mph 95%
2am Foggy 69º 23% WNW 1 mph 98%
3am Cloudy 70º 22% NW 2 mph 95%
4am Partly Cloudy 69º 12% NNW 2 mph 97%
5am Cloudy 68º 21% NNW 2 mph 98%
6am Mostly Cloudy 68º 21% N 1 mph 98%
7am Mostly Cloudy 69º 21% NNW 2 mph 97%
8am Mostly Cloudy 72º 20% NW 3 mph 89%
9am Mostly Cloudy 74º 20% WNW 3 mph 84%
10am Partly Cloudy 76º 14% WSW 4 mph 77%
11am Partly Cloudy 77º 9% SW 5 mph 73%
12pm Partly Cloudy 78º 3% SSW 6 mph 70%
1pm Partly Cloudy 79º 5% SSW 8 mph 68%
2pm Mostly Sunny 79º 2% SSW 9 mph 66%
3pm Sunny 79º 2% SSW 9 mph 66%
Thu
Aug 20 		Partly Cloudy 80º / 67º 24% W 7 mph 70%
Fri
Aug 21 		Showers 77º / 66º 55% ENE 8 mph 74%
Sat
Aug 22 		Rain 75º / 67º 65% E 9 mph 81%
Sun
Aug 23 		Showers 77º / 68º 44% SSE 11 mph 82%
Mon
Aug 24 		AM Showers 78º / 65º 42% SW 13 mph 73%

Weather Radar for South Yarmouth, MA See Radar

See Radar Map

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Yarmouth, MA

This Afternoon
High : 76ºF
SSE wind around 10 kt. Showers likely. Patchy fog after 3pm. Seas 1 ft or less.
Tonight
Low : 69ºF
SE wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers, mainly before 9pm. Patchy fog. Seas 1 ft or less.
Tuesday
High : 74ºF
Variable winds less than 5 kt becoming N 5 to 7 kt in the morning. Patchy fog before 11am. Seas 1 ft or less.
Tuesday Night
Low : 68ºF
Variable winds 5 kt or less. Patchy fog after midnight. Seas 1 ft or less.
Wednesday
High : 84ºF
Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Wednesday Night
Low : 71ºF
SW wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Thursday
High : 83ºF
Variable winds less than 5 kt becoming W around 6 kt in the morning. Mostly sunny. Seas 1 ft or less.
Thursday Night
Low : 67ºF
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Friday
High : 78ºF
Variable winds less than 5 kt becoming NE 5 to 7 kt in the morning. A chance of showers. Seas 1 ft or less.

NOAA Buoy Data Near South Yarmouth, MA See Map

Loading Map...
Loading Buoy Data...

    Wind Speed Forecast for South Yarmouth, MA

    MondayTuesdayWednesday
    Wind Speed (MPH) 865689712236
    8pm12am4am8am12pm4pm8pm12am4am8am12pm4pm
    MPH 865689712236
    DIR SEENENNENNNNWSWNNWNWSSW

    Current Weather Conditions In South Yarmouth, MA

    As Of: 33 minutes ago

    • 70ºF
    • 70ºF
    • 8mph
    • 0º (SE)
    • 8mph
    • Few Showers
    • 6mi
    • 29.85"
    • 90%
    • 0ºF

    The weather right now in South Yarmouth, MA is Few Showers. The current temperature is 70°F, and the expected high and low for today, Monday, August 17, 2026, are 72° high temperature and 68°F low temperature. The wind is currently blowing at 8 miles per hour, and coming from the Southeast. The wind is gusting to 8 mph. With the wind and the atmosphere the temperature feels like 70° Fahrenheit. Expected precipitation is 32 percent, with current humidity at 90 percent, and air pressure at 29.85 in. Visibility is 6 nautical miles. There are 2 current weather alert(s).

    Weather Alerts
    Rip Current Statement - 1:50pm Mon Aug 17 2026

    ...HIGH RIP CURRENT RISK IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING...

    WHAT: Dangerous rip currents expected.

    WHERE: Eastern Essex MA, Suffolk MA, Eastern Norfolk MA,
    Eastern Plymouth MA and Barnstable MA Counties.

    WHEN: From Tuesday morning through Tuesday evening.

    IMPACTS: Rip currents can sweep even the best swimmers away
    from shore into deeper water.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Small Craft Advisory - 1:50pm Mon Aug 17 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

    WHAT: Southeast winds 10 to 15 kt and seas around 2 feet.

    WHERE: Nantucket Sound.

    WHEN: Until 8 PM EDT this evening.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&