Measurements:
°C
°F
CURRENT WEATHER
11:07
Edgartown
66°F
SW 11 mph
Feels like: 66°F
Precip: 3%
World Resorts USA Edgartown Weather

7 Day Weather Forecast

09.15
tue
DAY
66°F
SW 11 mph
precip
3%
NIGHT
62°F
NW 6 mph
precip
5%
09.16
wed
DAY
68°F
NE 9 mph
precip
15%
NIGHT
68°F
NE 11 mph
precip
11%
09.17
thu
DAY
74°F
NE 9 mph
precip
9%
NIGHT
72°F
NE 14 mph
precip
28%
09.18
fri
DAY
76°F
SE 9 mph
precip
16%
NIGHT
66°F
SW 17 mph
precip
8%
09.19
sat
DAY
64°F
SW 9 mph
precip
8%
NIGHT
62°F
NW 12 mph
precip
16%
09.20
sun
DAY
66°F
N 19 mph
precip
85%
NIGHT
62°F
NE 21 mph
precip
32%
09.21
mon
DAY
66°F
SW 15 mph
precip
15%
NIGHT
62°F
W 13 mph
precip
16%

Edgartown Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Edgartown was 21.2°F. The maximum and minimum values were 20.6°F and 21.7°F respectively.

Edgartown on the Weather Map

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 71.4 °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
more details