Sea Temperature in Groton in August

© David Demers

Complete information on the sea temperature range in the Atlantic Ocean in Groton in August. Historical daily data. Climate details for August. 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.

Groton Climate and Swimming Opportunities in August

Groton lies within the Connecticut in United States. The average daytime temperature in Groton in August is 81°F (27°C), while the nighttime average is 64°F (18°C). There are typically nine rainy days during the month, with a total precipitation of 3.8 inches (98 mm). The daylight duration in August in Groton is 14 hours, with an average of 8 hours of sunshine per day. The average wind speed in August is 8 mph (13 km/h), and the humidity level is around 75%.

The water temperature in Groton in August ranges from 70°F to 72°F (21°C to 22°C). At the beginning of the month, the average temperature is around 72°F (22°C), shifting to 72°F (22°C) by mid-August and reaching 72°F (22°C) in the last ten days. Overall, the average sea temperature in Groton for August is 72°F (22°C). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.

Frequently Asked Questions About Water Temperatures in August in Groton