Weather in Martha's Vineyard in September

Martha's Vineyard, United States averages a high of 20.3°C (68.5°F) and low of 16.9°C (62.4°F) in September, with 8 rain days and 9.5 hours of daily sunshine. Travel score: 77.3/100 (Good). The best time to visit Martha's Vineyard is August.

High
20°C69°F
Low
17°C62°F
🌧️
8
rain days
☀️
9.5
hrs/day sunshine
💧
79%
humidity
77Good

September in Martha's Vineyard is mild and occasionally wet — good for most activities.

What are the average temperatures in Martha's Vineyard?

JanFebMarAprMayJunJulAugSep20°17°OctNovDec

How much does it rain in Martha's Vineyard in September?

Martha's Vineyard receives an average of 99.9mm of rainfall across 8 rainy days in September. The annual total is 1192.2mm.

JanFebMarAprMayJunJulAugSep8dOctNovDec

What should I pack for Martha's Vineyard in September?

Essentials

👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun

Traveling to United States in September?

Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.

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Data based on 1994–2024 averages · Last updated: 2024-12-31