Measurements:
°C
°F
Edgartown
56°F
SE 19 mph
Feels like: 52°F
Precip: 3%
World Resorts USA Edgartown Weather

Edgartown Sea Water Temperature

Current Sea Water Temperature:
+64.8°F
Maximum Sea Water Temperature in October: 71.4°F
Minimum Sea Water Temperature in October: 56.4°F
Average water temperature in October: 64.3°F

Sea Water Temperature for the Last 10 Days:

October 05 64.8°F September 30 61.6°F
October 04 66.0°F September 29 63.0°F
October 03 63.0°F September 28 64.2°F
October 02 60.6°F September 27 64.0°F
October 01 56.4°F September 26 65.4°F

When is the Warmest Sea for Edgartown?

According to our data for the last three years for Edgartown 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 Edgartown was 74.0°F. The maximum and minimum values were 71.8°F and 76.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Edgartown was 72.2°F. The maximum and minimum values were 69.2°F and 76.0°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Edgartown was 70.1°F. The maximum and minimum values were 61.6°F and 73.4°F respectively.

Best Time to Visit Edgartown
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 74.9 °F
July 73.3 °F
September 71.2 °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
March 14 mph

Edgartown on the Weather Map

USA Resorts:
NAME
F°
Boston +52
Chicago +58
Hawaii +80
Houston +80
Las Vegas +82
Los Angeles +96
Maui +72
Miami +86
Myrtle Beach +68
New York +56
San Diego +86
San Francisco +66
Santa Monica +88
Sarasota +82
Washington +58
24 Hours Weather Forecast
Edgartown
Local time: 01:01
06 oct, tuesday
0300 54°F
SE
17 mph
0600 50°F
SE
21 mph
0900 48°F
SE
17 mph
1200 54°F
SE
13 mph
1500 60°F
SE
14 mph
1800 60°F
SE
15 mph
2100 56°F
SE
12 mph
07 oct, wednesday
0000 54°F
SE
11 mph