Sea Temperature in Nantucket in August

© Al DiGiovanni

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

Nantucket Climate and Swimming Opportunities in August

Nantucket lies within the Massachusetts in United States. The average daytime temperature in Nantucket in August is 79°F (26°C), while the nighttime average is 63°F (17°C). There are typically 10 rainy days during the month, with a total precipitation of 3.1 inches (78 mm). The daylight duration in August in Nantucket is 14 hours, with an average of 8 hours of sunshine per day. The average wind speed in August is 10 mph (16 km/h), and the humidity level is around 76%.

The water temperature in Nantucket 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 Nantucket 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 Nantucket