Measurements:
°C
°F
Edgartown
18°F
SE 13 mph
Feels like: 8°F
Precip: 0%
World Resorts USA Edgartown Weather

Edgartown Sea Water Temperature

Current Sea Water Temperature:
+32.8°F
Maximum Sea Water Temperature in January: 45.0°F
Minimum Sea Water Temperature in January: 32.0°F
Average water temperature in January: 38.7°F

Sea Water Temperature for the Last 10 Days:

January 29 32.8°F January 24 36.8°F
January 28 32.0°F January 23 37.2°F
January 27 33.8°F January 22 37.4°F
January 26 34.4°F January 21 37.6°F
January 25 36.2°F January 20 38.4°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Edgartown was 72.4°F. The maximum and minimum values were 70.4°F and 75.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Edgartown was 71.5°F. The maximum and minimum values were 67.2°F and 74.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Edgartown was 70.2°F. The maximum and minimum values were 68.2°F and 72.4°F respectively.

Best Time to Visit Edgartown
The most sunny months:
November 15 days
October 14 days
June 13 days
The most warm months:
July 76.7 °F
August 76.0 °F
September 71.4 °F
Warmest sea temperature:
August 75.1 °F
July 73.5 °F
September 71.4 °F
The most cold months:
January 35.3 °F
February 35.6 °F
March 41.4 °F
The most rainy months:
January 3 days
April 3 days
October 3 days
The most windy months:
January 14 mph
December 14 mph
November 14 mph

Edgartown on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Edgartown
Local time: 10:53
29 jan, thursday
1200 18°F
SE
13 mph
1500 20°F
E
17 mph
1800 22°F
E
19 mph
2100 20°F
E
20 mph
30 jan, friday
0000 18°F
E
22 mph
0300 14°F
E
20 mph
0600 12°F
E
20 mph
0900 14°F
E
21 mph