Martha's Vineyard weather by month & the best time to visit
🇺🇸 United States · seaside town · humid subtropical climate
The best time to visit Martha's Vineyard is July — its sunniest month (Sunshine Score 77/100), with August and June close behind. Martha's Vineyard averages about 2,196 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 79 mm of rain in July.
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- Sun hours / year
- 2,196
- Sunniest month
- July
- Peak score
- 77/100
- Rain / year
- 1,155 mm
- Snow / year
- ≈90 cm
- Midday UV at peak
- 7 (high)
- Sea at warmest
- 21°C / 70°F
- Population
- 21k
- Elevation
- 18 m
When is the best time to visit Martha's Vineyard?
For sunshine, the best time to visit Martha's Vineyard is July, then August and June. The dullest month is January (0/100, 90 mm of rain). The full month-by-month picture is in the table below.
How sunny is Martha's Vineyard?
Martha's Vineyard gets a moderate 2,196 hours of sunshine a year. 77 Sunshine Score points separate July (77) from January (0), so the month you pick matters. It ranks #322 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 1,155 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | -2° / 28°F | 90 mm | 1 | 6° / 43°F |
| February | 0 | 3° / 37°F | -2° / 28°F | 84 mm | 2 | 4° / 39°F |
| March | 0 | 5° / 41°F | 1° / 34°F | 109 mm | 3 | 5° / 41°F |
| April | 12 | 10° / 50°F | 5° / 41°F | 103 mm | 5 | 8° / 46°F |
| May | 38 | 14° / 57°F | 10° / 50°F | 86 mm | 6 | 12° / 54°F |
| June | 75 | 20° / 68°F | 15° / 59°F | 92 mm | 7 | 17° / 63°F |
| July | 77 | 24° / 75°F | 20° / 68°F | 79 mm | 7 | 21° / 70°F |
| August | 77 | 24° / 75°F | 20° / 68°F | 78 mm | 6 | 21° / 70°F |
| September | 74 | 21° / 70°F | 17° / 63°F | 96 mm | 5 | 20° / 68°F |
| October | 47 | 16° / 61°F | 12° / 54°F | 118 mm | 3 | 17° / 63°F |
| November | 18 | 11° / 52°F | 6° / 43°F | 105 mm | 2 | 13° / 55°F |
| December | 0 | 7° / 45°F | 2° / 36°F | 115 mm | 1 | 8° / 46°F |
Sea temperature in Martha's Vineyard by month
The sea off Martha's Vineyard is warmest in July at around 21°C / 70°F, and coolest in February at 4°C / 39°F. The water sits at a comfortable 21°C or warmer roughly 2 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Martha's Vineyard on the interactive sunshine globe →
Nearby places for sunshine
- Nantucket United States · 49 km · best in Jul · 2,196 h sun/yr
- Providence/Warwick United States · 77 km · best in Aug · 2,279 h sun/yr
- Boston United States · 113 km · best in Jul · 2,157 h sun/yr
- Hartford United States · 183 km · best in May · 2,192 h sun/yr
- Manchester (New Hampshire) United States · 184 km · best in Sep · 2,158 h sun/yr
- New Haven United States · 190 km · best in May · 2,191 h sun/yr
Nearest destinations
- Hyannis United States · 41 km · 2,197 h sun/yr · best in Jul
- New Bedford United States · 42 km · 2,197 h sun/yr · best in Jul
- Newport United States · 58 km · 2,279 h sun/yr · best in Aug
- Block Island United States · 84 km · 2,278 h sun/yr · best in Jul
Head-to-head
How Martha's Vineyard compares month by month: Martha's Vineyard vs Boston · Martha's Vineyard vs Providence/Warwick · Martha's Vineyard vs Nantucket · Martha's Vineyard vs Hamilton (Bermuda) · all comparisons
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