Measurements:
°C
°F
Martha's Vineyard
60°F
SE 22 mph
Feels like: 60°F
Precip: 2%
World Resorts USA Martha's Vineyard Weather

Martha's Vineyard Sea Water Temperature

Current Sea Water Temperature:
+64.8°F
Maximum Sea Water Temperature in October: 71.2°F
Minimum Sea Water Temperature in October: 57.4°F
Average water temperature in October: 64.6°F

Sea Water Temperature for the Last 10 Days:

October 05 64.8°F September 30 63.4°F
October 04 65.6°F September 29 64.6°F
October 03 63.8°F September 28 64.6°F
October 02 61.8°F September 27 64.6°F
October 01 57.4°F September 26 65.6°F

When is the Warmest Sea for Martha's Vineyard?

According to our data for the last three years for Martha's Vineyard the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Martha's Vineyard was 73.0°F. The maximum and minimum values were 71.2°F and 74.8°F respectively.

Sea Water Temperature in July

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.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Martha's Vineyard was 69.6°F. The maximum and minimum values were 63.4°F and 73.0°F respectively.

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 70.9 °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
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Martha's Vineyard
Local time: 19:51
05 oct, monday
2100 60°F
SE
22 mph
06 oct, tuesday
0000 56°F
SE
19 mph
0300 54°F
SE
19 mph
0600 50°F
SE
21 mph
0900 48°F
SE
17 mph
1200 54°F
SE
14 mph
1500 60°F
E
16 mph
1800 60°F
SE
16 mph