Temperature
Cold by day, cold at night.
Cold days and plenty of sun. Wind on exposed beaches is the main drawback.
Cold by day, cold at night.
Several rainy days. About 11 wet days, more than in most months.
A mix of sunshine and cloud.
Humidity is rarely noticeable in the cool air.
In April, days and nights feel about the same, around 33°.
Partly cloudy skies this month.
Wind can affect exposed beach comfort.
April stays around 45°F through the day and night.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 40 | 33 | 4.6 | 13 | 5.9 | 73 | 42 |
| Feb | 40 | 33 | 4.1 | 11 | 7.0 | 74 | 40 |
| Mar | 42 | 36 | 4.5 | 11 | 8.1 | 76 | 39 |
| Apr | 47 | 43 | 4.1 | 11 | 9.4 | 81 | 43 |
| May | 53 | 50 | 3.7 | 10 | 10.3 | 87 | 49 |
| Jun | 61 | 58 | 3.1 | 8 | 11.5 | 90 | 58 |
| Jul | 69 | 66 | 3.0 | 8 | 11.9 | 90 | 66 |
| Aug | 70 | 67 | 3.5 | 9 | 11.2 | 88 | 68 |
| Sep | 66 | 63 | 4.1 | 8 | 9.6 | 83 | 65 |
| Oct | 60 | 55 | 5.2 | 10 | 8.1 | 77 | 59 |
| Nov | 52 | 46 | 4.0 | 9 | 6.3 | 73 | 53 |
| Dec | 46 | 39 | 4.9 | 12 | 5.5 | 73 | 47 |
Similar climates
Want a side-by-side climate view? Compare Nantucket with Martha's Vineyard.
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