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Sea Temperature in Groton in September

Complete information on the sea temperature range in the Atlantic Ocean in Groton in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Groton. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Groton in September

63°F

MINIMUN

69°F

AVERAGE

75°F

MAXIMUM

Historical Data of Water Temperature in September in Groton

Water Temperature Chart for Atlantic Ocean in Groton in September

Sea Temperature Table in Groton in September Over the Past Years

Day202420232022Average
Sep 172°C70°C68°C69°C
Sep 270°C72°C66°C69°C
Sep 370°C72°C68°C70°C
Sep 470°C70°C66°C69°C
Sep 570°C72°C66°C69°C
Sep 672°C70°C66°C69°C
Sep 770°C70°C66°C69°C
Sep 870°C72°C66°C69°C
Sep 972°C70°C68°C69°C
Sep 1070°C72°C66°C69°C
Sep 1170°C70°C66°C68°C
Sep 1270°C70°C66°C69°C
Sep 1372°C70°C66°C69°C
Sep 1472°C70°C66°C69°C
Sep 1570°C72°C68°C70°C
Sep 1672°C68°C68°C69°C
Sep 1770°C68°C68°C68°C
Sep 1872°C68°C70°C69°C
Sep 1972°C68°C70°C69°C
Sep 2072°C66°C70°C69°C
Sep 2172°C66°C68°C69°C
Sep 2272°C66°C66°C68°C
Sep 2370°C64°C66°C67°C
Sep 2472°C66°C66°C68°C
Sep 2570°C66°C68°C67°C
Sep 2670°C66°C68°C67°C
Sep 2770°C64°C68°C67°C
Sep 2870°C66°C68°C67°C
Sep 2970°C66°C68°C68°C
Connecticut, United StatesConnecticut, United StatesConnecticut, United States

Groton Climate and Swimming Opportunities in September

75°F

Average Day Air Temperature

57°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

9 days

Number of Rainy Days

12 hrs

Daylight
per Day

7 hrs

Sunshine
per Day

9 mph

Average Wind Speed

75%

Average
humidity

Groton lies within the Connecticut in United States. The average daytime temperature in Groton in September is 75°F (24°C), while the nighttime average is 57°F (14°C). There are typically nine rainy days during the month, with a total precipitation of 4.0 inches (101 mm). The daylight duration in September in Groton is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 9 mph (14 km/h), and the humidity level is around 75%.

The water temperature in Groton in September ranges from 66°F to 70°F (19°C to 21°C). At the beginning of the month, the average temperature is around 70°F (21°C), shifting to 70°F (21°C) by mid-September and reaching 68°F (20°C) in the last ten days. Overall, the average sea temperature in Groton for September is 68°F (20°C). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.

Frequently Asked Questions About Water Temperatures in September in Groton

What is the sea temperature in Groton in September?

The water temperature in the Atlantic Ocean in Groton in September ranges from 66°F to 70°F (19°C to 21°C).

Is it possible to swim in the Atlantic Ocean in Groton in September?

The average sea temperature in Groton in September is 68°F (20°C), and the air temperature is 75°F (24°C), so very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.