Martha's Vineyard Weather Forecast
Martha's Vineyard weather: 69°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Martha's Vineyard
Derived from the current forecast window - not an official warning.
Peak gusts of 31 mph and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,6 in, 1,9 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day forecast for Martha's Vineyard
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | 🌧️ Rain | 70° / 67° | 79% · 0,4 in | 10 mph | 1 |
| Sat, Aug 22 | 🌦️ Light drizzle | 72° / 66° | 43% · 0,1 in | 7 mph | 2 |
| Sun, Aug 23 | 🌧️ Showers | 82° / 66° | 63% · 0,3 in | 10 mph | 7 |
| Mon, Aug 24 | ☁️ Overcast | 80° / 67° | 14% | 15 mph | 7 |
| Tue, Aug 25 | ☀️ Clear sky | 78° / 62° | 2% | 12 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 83° / 65° | 7% | 10 mph | 7 |
| Thu, Aug 27 | 🌦️ Light showers | 78° / 66° | 37% · 0,3 in | 12 mph | 2 |
| Fri, Aug 28 | 🌧️ Showers | 82° / 70° | 37% · 0,6 in | 13 mph | 5 |
| Sat, Aug 29 | ☁️ Overcast | 82° / 68° | 9% | 10 mph | 7 |
| Sun, Aug 30 | 🌦️ Light drizzle | 75° / 64° | 16% · 0,1 in | 8 mph | 5 |
| Mon, Aug 31 | 🌦️ Light drizzle | 80° / 62° | 24% · 0,0 in | 7 mph | 7 |
| Tue, Sep 1 | 🌦️ Light drizzle | 77° / 62° | 24% · 0,1 in | 8 mph | 6 |
| Wed, Sep 2 | 🌦️ Light drizzle | 80° / 61° | 30% · 0,0 in | 8 mph | 5 |
| Thu, Sep 3 | ☁️ Overcast | 86° / 66° | 25% | 5 mph | 7 |
| Fri, Sep 4 | ☁️ Overcast | 88° / 67° | 32% | 5 mph | 7 |
| Sat, Sep 5 | ☀️ Clear sky | -- / -- | 27% | -- | — |
What this means for Martha's Vineyard
Today is slightly cooler than average for August. The forecast high of 70°F is 6.7°F below the 77°F typical for this month.
A 79% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,4 in is forecast, which is enough to soak trails and slow traffic.
Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 73°F.
See the Martha's Vineyard forecast by time range
Martha's Vineyard weather - more answers
Explore Martha's Vineyard
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Martha's Vineyard?
Martha's Vineyard is an island in Massachusetts. Its coordinates are 41.3888, -70.6455. It lies in North America.
What is the weather like in Martha's Vineyard right now?
It is currently 69°F (21°C) with overcast. Humidity is 89% and wind is 8 mph.
When is the best time to visit Martha's Vineyard?
June, July, August, September and October offer the most comfortable conditions in Martha's Vineyard, which has a continental climate. January, February and March are usually the hardest months for outdoor plans.
What time zone is Martha's Vineyard in?
Martha's Vineyard observes America/New_York (UTC-04:00). The local time is 4:45 AM.
What is the nearest airport to Martha's Vineyard?
The closest airports are Boston Logan International Airport (BOS), 70 mi away, John F. Kennedy International Airport (JFK), 171 mi away and LaGuardia Airport (LGA), 173 mi away.
What are the top things to do in Martha's Vineyard?
Popular options include Nantucket, Cape Cod National Seashore, Central Park, Times Square, Empire State Building and Hudson River.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 4:45 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
