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Martha's Vineyard weather in August 2025
Expect 77°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Martha's Vineyard in August. Check more long-term weather averages for Martha's Vineyard in August before you book your next holiday to Massachusetts in 2025/2026.
- 77°F max day temperature
77 - 8 hours of sunshine per day
- 10 days with some rainfall
10 - 63°F min night temperature
63 - 14 hours of daylight per day
14 - Low heat & humidity
L - 4.1 inches of monthly rainfall
4.1 - 8 (Very High) UV index
8 - 68°F sea temperature
68
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Recommended for Massachusetts
The August weather guide for Massachusetts (Martha's Vineyard) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C) | Imperial (°F)
More about the USA
How hot is it in Martha's Vineyard in August?
Daytime temperatures usually reach 77°F in Martha's Vineyard in August with low heat and humidity, falling to 63°F at night.
How sunny is it in Martha's Vineyard in August?
There are normally 8 hours of bright sunshine each day in Martha's Vineyard in August - that's 58% of daylight hours.
How warm is the sea around Martha's Vineyard in August?
The average sea temperature around Martha's Vineyard in August is 68°F.
Does it rain in Martha's Vineyard in August?
There are usually 10 days with some rain in Martha's Vineyard in August and the average monthly rainfall is 4.1 inches.
What is the chance of a hurricane in Martha's Vineyard in August?
On average less than 1 day in August in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.
Martha's Vineyard August sunrise & sunset times
Browse the sunrise and sunset times for Martha's Vineyard in August 2025. Select a month to view Martha's Vineyard sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 04:38 | 18:59 |
| Saturday, 16th August 2025 | 04:53 | 18:40 |
| Sunday, 31st August 2025 | 05:08 | 18:17 |
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