South Yarmouth, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Wed
Jun 17 		Partly Cloudy
Close Hourly 		70º / 60º 2% S 9 mph 69%
6am Mostly Sunny 61º 2% SSW 2 mph 85%
7am Partly Cloudy 65º 2% SSW 4 mph 78%
8am Partly Cloudy 66º 2% SSW 4 mph 74%
9am Mostly Cloudy 68º 2% SSW 6 mph 72%
10am Partly Cloudy 69º 1% S 7 mph 68%
11am Mostly Sunny 70º 1% S 8 mph 65%
12pm Mostly Sunny 71º 1% S 8 mph 60%
1pm Partly Cloudy 70º 1% S 9 mph 63%
2pm Mostly Sunny 70º 1% S 9 mph 61%
3pm Sunny 69º 1% S 9 mph 60%
4pm Sunny 69º 1% S 9 mph 58%
5pm Mostly Sunny 69º 2% S 9 mph 58%
6pm Partly Cloudy 68º 2% S 8 mph 60%
7pm Mostly Sunny 67º 2% S 8 mph 67%
8pm Sunny 65º 11% S 7 mph 73%
9pm Mostly Clear 64º 8% S 6 mph 77%
10pm Partly Cloudy 63º 15% S 6 mph 82%
11pm Partly Cloudy 63º 12% S 6 mph 80%
Thu
Jun 18 		PM Showers/Wind
View Hourly 		72º / 66º 35% SSE 24 mph 82%
12am Partly Cloudy 63º 10% S 6 mph 82%
1am Partly Cloudy 62º 15% S 6 mph 84%
2am Partly Cloudy 62º 11% S 6 mph 87%
3am Partly Cloudy 62º 11% SSE 6 mph 86%
4am Mostly Cloudy 61º 13% SSE 6 mph 88%
5am Cloudy 61º 22% SSE 7 mph 90%
6am Cloudy 61º 18% SSE 9 mph 90%
7am Cloudy 63º 18% SSE 11 mph 86%
8am Cloudy 65º 17% SSE 12 mph 82%
9am Cloudy 66º 11% SSE 15 mph 81%
10am Cloudy 66º 15% SSE 16 mph 82%
11am Cloudy 67º 17% SSE 17 mph 83%
12pm Cloudy 68º 7% SSE 18 mph 79%
1pm Cloudy/Wind 69º 19% SSE 20 mph 78%
2pm Cloudy/Wind 70º 8% SSE 21 mph 79%
3pm Cloudy/Wind 71º 11% S 22 mph 79%
4pm Cloudy/Wind 71º 24% S 24 mph 85%
5pm Few Showers/Wind 71º 34% S 23 mph 86%
6pm Showers/Wind 71º 36% SSW 22 mph 88%
7pm Showers/Wind 70º 38% SSW 20 mph 90%
8pm Few Showers 70º 32% SW 18 mph 89%
9pm Mostly Cloudy 70º 10% SW 16 mph 90%
10pm Mostly Cloudy 69º 14% SW 15 mph 90%
11pm Mostly Cloudy 69º 8% SW 14 mph 88%
Fri
Jun 19 		Partly Cloudy
View Hourly 		75º / 64º 4% SW 18 mph 63%
12am Mostly Cloudy 68º 8% WSW 13 mph 90%
1am Mostly Cloudy 68º 8% WSW 10 mph 88%
2am Mostly Cloudy 69º 8% WSW 7 mph 84%
3am Partly Cloudy 69º 14% WSW 8 mph 81%
4am Mostly Cloudy 68º 6% WSW 7 mph 80%
5am Partly Cloudy 67º 6% WSW 7 mph 82%
Sat
Jun 20 		Mostly Sunny 78º / 63º 7% W 17 mph 50%
Sun
Jun 21 		Mostly Sunny 75º / 63º 24% W 10 mph 58%
Mon
Jun 22 		Rain 72º / 63º 67% S 14 mph 73%
Tue
Jun 23 		AM Showers 72º / 63º 51% WNW 14 mph 73%
Wed
Jun 24 		Partly Cloudy 75º / 63º 15% WSW 9 mph 63%

Weather Radar for South Yarmouth, MA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Yarmouth, MA

Wednesday
High : 77ºF
Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less.
Wednesday Night
Low : 62ºF
Variable winds 5 kt or less. Patchy fog after 1am. Seas 1 ft or less.
Thursday
High : 79ºF
S wind 7 to 10 kt increasing to 13 to 16 kt in the afternoon. Winds could gust as high as 29 kt. A chance of showers, mainly after 5pm. Seas 1 ft or less.
Thursday Night
Low : 70ºF
SSW wind 10 to 13 kt becoming WSW 6 to 9 kt after midnight. Winds could gust as high as 23 kt. A chance of showers, mainly before 8pm. Seas 1 ft or less.
Juneteenth
High : 82ºF
SW wind 7 to 12 kt, with gusts as high as 22 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
Low : 68ºF
W wind 6 to 9 kt. Mostly clear. Seas 1 ft or less.
Saturday
High : 86ºF
WSW wind 10 to 12 kt, with gusts as high as 21 kt. Sunny. Seas 1 ft or less.
Saturday Night
Low : 67ºF
W wind around 7 kt. Mostly clear. Seas 1 ft or less.
Sunday
High : 81ºF
WNW wind around 8 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

NOAA Buoy Data Near South Yarmouth, MA See Map

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    Wind Speed Forecast for South Yarmouth, MA

    WednesdayThursdayFriday
    Wind Speed (MPH) 2798669162122157
    10am2pm6pm10pm2am6am10am2pm6pm10pm2am6am
    MPH 2798669162122157
    DIR SSWSSSSSSSESSESSESSWSWWSW

    Current Weather Conditions In South Yarmouth, MA

    As Of: 41 minutes ago

    • 61ºF
    • 61ºF
    • 2mph
    • 0º (SSW)
    • 2mph
    • Mostly Sunny
    • 10mi
    • 29.84"
    • 85%
    • 0ºF

    The weather right now in South Yarmouth, MA is Mostly Sunny. The current temperature is 61°F, and the expected high and low for today, Wednesday, June 17, 2026, are 70° high temperature and 60°F low temperature. The wind is currently blowing at 2 miles per hour, and coming from the South Southwest. The wind is gusting to 2 mph. With the wind and the atmosphere the temperature feels like 61° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 85 percent, and air pressure at 29.84 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 3:18am Wed Jun 17 2026

    ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 1 AM EDT FRIDAY...

    WHAT: South winds 15 to 25 kt with gusts up to 30 kt and seas
    3 to 5 feet expected.

    WHERE: Nantucket Sound and Vineyard Sound.

    WHEN: From 11 AM Thursday to 1 AM EDT Friday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

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

    &&