Measurements:
°C
°F
CURRENT WEATHER
09:39
Martha's Vineyard
64°F
SW 12 mph
Feels like: 64°F
Precip: 4%
World Resorts USA Martha's Vineyard Weather

7 Day Weather Forecast

09.15
tue
DAY
66°F
SW 11 mph
precip
3%
NIGHT
62°F
NW 5 mph
precip
7%
09.16
wed
DAY
70°F
NE 7 mph
precip
6%
NIGHT
68°F
NE 11 mph
precip
9%
09.17
thu
DAY
74°F
NE 11 mph
precip
6%
NIGHT
72°F
NE 15 mph
precip
34%
09.18
fri
DAY
72°F
SW 16 mph
precip
3%
NIGHT
68°F
SW 14 mph
precip
14%
09.19
sat
DAY
66°F
W 10 mph
precip
3%
NIGHT
70°F
N 20 mph
precip
18%
09.20
sun
DAY
74°F
E 17 mph
precip
45%
NIGHT
66°F
SW 9 mph
precip
13%
09.21
mon
DAY
66°F
SW 9 mph
precip
19%
NIGHT
62°F
SW 14 mph
precip
17%

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

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Martha's Vineyard was 20.7°F. The maximum and minimum values were 20.2°F and 21.5°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 77.0 °F
September 71.4 °F
Warmest sea temperature:
August 74.1 °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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