Martha's Vineyard weather in July 2025

Q: How hot is it in Martha's Vineyard in July?

Daytime temperatures usually reach 26°C in Martha's Vineyard in July with low heat and humidity, falling to 18°C at night.

Q: How sunny is it in Martha's Vineyard in July?

There are normally 9 hours of bright sunshine each day in Martha's Vineyard in July - that's 58% of daylight hours.

Q: How warm is the sea around Martha's Vineyard in July?

The average sea temperature around Martha's Vineyard in July is 19°C.

Q: Does it rain in Martha's Vineyard in July?

There are usually 9 days with some rain in Martha's Vineyard in July and the average monthly rainfall is 71mm.

Q: What is the chance of a cyclone in Martha's Vineyard in July?

On average less than 1 day in July in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.

Expect 79°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Martha's Vineyard in July. Check more long-term weather averages for Martha's Vineyard in July before you book your next holiday to Massachusetts in 2025/2026.

79
79°F max day temperature
9
9 hours of sunshine per day
9
9 days with some rainfall
64
64°F min night temperature
15
15 hours of daylight per day
L
Low heat & humidity
2.8
2.8 inches of monthly rainfall
8
8 (Very High) UV index
66
66°F sea temperature

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The July 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 July?

Daytime temperatures usually reach 79°F in Martha's Vineyard in July with low heat and humidity, falling to 64°F at night.

How sunny is it in Martha's Vineyard in July?

There are normally 9 hours of bright sunshine each day in Martha's Vineyard in July - that's 58% of daylight hours.

How warm is the sea around Martha's Vineyard in July?

The average sea temperature around Martha's Vineyard in July is 66°F.

Does it rain in Martha's Vineyard in July?

There are usually 9 days with some rain in Martha's Vineyard in July and the average monthly rainfall is 2.8 inches.

What is the chance of a hurricane in Martha's Vineyard in July?

On average less than 1 day in July in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.

Martha's Vineyard July sunrise & sunset times

Browse the sunrise and sunset times for Martha's Vineyard in July 2025. Select a month to view Martha's Vineyard sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Tuesday, 1st July 2025	04:13	19:20
Wednesday, 16th July 2025	04:23	19:14
Thursday, 31st July 2025	04:37	19:00

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Massachusetts - quick facts
Flight time^✝	7.5 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Culture Nightlife
Tourist info	Visit Massachusetts