Measurements:
°C
°F
CURRENT WEATHER
15:13
Martha's Vineyard
88°F
NE 12 mph
Feels like: 92°F
Precip: 2%
World Resorts USA Martha's Vineyard Weather

7 Day Weather Forecast

08.05
wed
DAY
88°F
NE 11 mph
precip
4%
NIGHT
70°F
NE 12 mph
precip
15%
08.06
thu
DAY
78°F
NE 14 mph
precip
15%
NIGHT
76°F
NE 14 mph
precip
20%
08.07
fri
DAY
80°F
NE 14 mph
precip
14%
NIGHT
76°F
NE 12 mph
precip
17%
08.08
sat
DAY
78°F
NE 15 mph
precip
13%
NIGHT
76°F
E 16 mph
precip
24%
08.09
sun
DAY
78°F
NE 14 mph
precip
12%
NIGHT
78°F
NE 17 mph
precip
12%
08.10
mon
DAY
80°F
NE 13 mph
precip
12%
NIGHT
78°F
NE 13 mph
precip
53%
08.11
tue
DAY
80°F
E 15 mph
precip
13%
NIGHT
74°F
W 6 mph
precip
14%

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

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Martha's Vineyard was 20.6°F. The maximum and minimum values were 19.6°F and 22.3°F respectively.

Martha's Vineyard on the Weather Map

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
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