Temperature
Cold by day, freezing at night.
Cold weather and wind on exposed beaches are the main limitations.
Cold by day, freezing at night.
Several rainy days. About 11 wet days, the highest monthly average.
A mix of sunshine and cloud.
Humidity is rarely noticeable in the cool air.
In January, afternoons feel about 22° and nights feel near 19°.
Mostly cloudy skies this month.
Wind can affect exposed beach comfort.
January late afternoons are around 35°F, and early evening stays near 35°F.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 39 | 30 | 4.5 | 11 | 6.4 | 72 | 42 |
| Feb | 38 | 30 | 3.8 | 10 | 7.2 | 72 | 40 |
| Mar | 42 | 35 | 4.6 | 11 | 8.3 | 73 | 39 |
| Apr | 48 | 43 | 4.3 | 11 | 9.4 | 77 | 43 |
| May | 56 | 52 | 3.8 | 11 | 10.3 | 83 | 49 |
| Jun | 65 | 61 | 3.3 | 9 | 11.4 | 85 | 58 |
| Jul | 72 | 68 | 2.9 | 8 | 11.9 | 86 | 66 |
| Aug | 72 | 69 | 3.2 | 8 | 11.1 | 84 | 68 |
| Sep | 68 | 64 | 4.0 | 8 | 9.5 | 80 | 65 |
| Oct | 60 | 55 | 4.9 | 10 | 8.1 | 75 | 59 |
| Nov | 52 | 45 | 3.8 | 9 | 6.5 | 72 | 53 |
| Dec | 45 | 37 | 4.9 | 11 | 5.8 | 72 | 47 |
Similar climates
Want a side-by-side climate view? Compare Martha's Vineyard with Nantucket.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology