Martha's Vineyard Weather Forecast
Martha's Vineyard weather: 67°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Will it rain in Martha's Vineyard?
Yes - rain is likely in Martha's Vineyard today.
A 90% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,8 in is forecast, which is enough to soak trails and slow traffic.
Over the next 7 days, about 1,5 in of precipitation is forecast, with the wettest days falling on Fri and Sun.
The next 7 days carry about 2.3 times a normal week's rain for August (1,5 in against 0,6 in).
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° | 90% · 0,8 in | 14 mph | 1 |
| Sat, Aug 22 | ☁️ Overcast | 72° / 65° | 18% | 8 mph | 2 |
| Sun, Aug 23 | 🌧️ Heavy rain | 81° / 66° | 72% · 0,7 in | 11 mph | 6 |
| Mon, Aug 24 | ☁️ Overcast | 80° / 64° | 8% | 16 mph | 7 |
| Tue, Aug 25 | ⛅ Partly cloudy | 77° / 64° | 2% | 13 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 80° / 61° | 2% | 9 mph | 7 |
| Thu, Aug 27 | ☁️ Overcast | 80° / 62° | 24% | 9 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 81° / 64° | 33% | 5 mph | 6 |
| Sat, Aug 29 | 🌦️ Light drizzle | 78° / 64° | 14% · 0,0 in | 7 mph | 4 |
| Sun, Aug 30 | 🌦️ Light drizzle | 79° / 62° | 14% · 0,0 in | 6 mph | 6 |
| Mon, Aug 31 | ☁️ Overcast | 80° / 63° | 15% | 11 mph | 7 |
| Tue, Sep 1 | ☁️ Overcast | 82° / 71° | 16% | 20 mph | 7 |
| Wed, Sep 2 | 🌦️ Drizzle | 85° / 70° | 13% · 0,1 in | 16 mph | 7 |
| Thu, Sep 3 | ☁️ Overcast | 70° / 64° | 11% | 16 mph | 3 |
| Fri, Sep 4 | 🌧️ Heavy drizzle | 64° / 60° | 20% · 0,2 in | 9 mph | 1 |
| Sat, Sep 5 | ☁️ Overcast | 75° / 63° | 27% | 11 mph | 4 |
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 90% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,8 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.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and March - historically the least comfortable months here.
See the Martha's Vineyard forecast by time range
Martha's Vineyard weather - more answers
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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 67°F (19°C) with overcast. Humidity is 89% and wind is 13 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 11:03 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.
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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 11:03 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
