Martha's Vineyard Weather, When to Go and Climate Information

(Martha's Vineyard, Massachusetts - MA, USA)

Being a small island close to the Massachusetts mainland, Martha's Vineyard generally features a milder climate in the winter and cooler weather in the summer, compared to nearby cities and towns, such as New Bedford, Fairhaven, Barnstable, Plymouth, Duxbury, Marshfield and Boston. Surrounded by the Atlantic Ocean, weather on Martha's Vineyard is often sunny, although rain or fog can be unpredictable and somewhat changeable, even during the summer months of June, July and August.

Martha's Vineyard's is popular throughout the year and particularly pleasant during the spring and fall months, when the weather and climate is mild and comfortable. The island is noticeably quieter at this time of the year and Spring can be a fairly short season on Martha's Vineyard, with occasional snowy weather as late as April.

Average summer temperatures in Martha's Vineyard peak in July at around 26°C / 79°F, when the island's beaches are at their busiest. The climate is known for being quite hot and humid during the summer on Martha's Vineyard, cooled by the pleasant ocean breezes. Although most days in the summer are fairly sunny, being an island, Martha's Vineyard is prone to foggy weather, which can dramatically cool the climate.

Winters in Martha's Vineyard are warmer than the nearby mainland, as a direct result of the Gulf Stream. December, January and February are the coldest winter months, when the weather can be chilly. Martha's Vineyard is at its most quiet during the winter, although many people choose to take advantage of the reduced hotel rates at this time of the year.

The average annual rainfall / precipitation in Martha's Vineyard is 111 cm / 44 inches, and the Cape's average annual snowfall is approximately 101 cm / 40 inches.

Martha's Vineyard Weather and Climate Chart (Averages)

The following are the normal daily temperature ranges for Martha's Vineyard:



4°C / 39°F
-4°C / 25°F


5°C / 41°F
-3°C / 27°F


8°C / 46°F
-1°C / 30°F


12°C / 54°F
5°C / 41°F


17°C / 63°F
9°C / 48°F


22°C / 72°F
13°C / 55°F


26°C / 79°F
17°C / 63°F


24°C / 75°F
16°C / 61°F


21°C / 70°F
13°C / 55°F


15°C / 59°F
8°C / 46°F


11°C / 52°F
3°C / 37°F


6°C / 43°F
-2°C / 28°F