Measurements:
°C
°F
Martha's Vineyard
88°F
NE 12 mph
Feels like: 92°F
Precip: 2%
World Resorts USA Martha's Vineyard Weather July Weather in Martha's Vineyard

Martha's Vineyard Weather: July

Average Day Temperature: 77.7°F
Average Night Temperature: 72.3°F
Sea Water Temperature: 72.5°F
Number of Sunny Days: 12 days
Sunshine Hours: 14.4 - 15.1 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.0 in

Air Temperature in July, °F

Select Year: 2026 2025 2024

The highest day temperature in July 2026 was 103°F. The lowest night temperature was 61°F. The average values for day and night temperatures during July were 83.9°F и 68.3°F respectivly.

Martha's Vineyard Water Sea Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Martha's Vineyard was 70.7°F. The maximum and minimum values were 68.2°F and 73.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during July. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in July, in

Precipitation total in July for Martha's Vineyard is 1.0 in.

Wind Speed in July, mph

The average wind speed in July is 10.8 mph. It makes July one of the most windless months of the year for Martha's Vineyard.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Martha's Vineyard in July is 8.6 hours.

Best Time to Visit Martha's Vineyard
The most sunny months:
November 15 days
October 14 days
June 14 days
The most warm months:
July 77.7 °F
August 76.0 °F
September 71.4 °F
Warmest sea temperature:
August 74.3 °F
July 72.5 °F
September 71.1 °F
The most cold months:
February 35.1 °F
January 35.1 °F
December 41.5 °F
The most rainy months:
January 3 days
October 3 days
July 2 days
The most windy months:
December 14 mph
January 14 mph
November 14 mph

Martha's Vineyard on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +82
Hawaii +82
Houston +106
Las Vegas +124
Los Angeles +92
Maui +78
Miami +92
Myrtle Beach +84
New York +84
San Diego +80
San Francisco +62
Santa Monica +80
Sarasota +92
Washington +88
24 Hours Weather Forecast
Martha's Vineyard
Local time: 15:16
05 aug, wednesday
1800 86°F
NE
12 mph
2100 72°F
NE
12 mph
06 aug, thursday
0000 70°F
NE
12 mph
0300 76°F
NE
11 mph
0600 76°F
NE
11 mph
0900 78°F
NE
11 mph
1200 78°F
NE
14 mph
1500 80°F
NE
17 mph