Temperature
Pleasant by day, mild at night.
72°Ftypical Aug high
Martha's Vineyard is most comfortable in summer and early autumn. Summers are mild and winters are cold. Rain is frequent in most months. Humidity is usually low.

Pleasant by day, mild at night.
Rainfall is lower than usual here.
Very sunny skies.
The air feels slightly humid this month.
Partly cloudy across the month.
Want a side-by-side climate view? Compare Martha's Vineyard with Capri.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology