Sea Temperature in Charlestown in September

© Michael E

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

Charlestown Climate and Swimming Opportunities in September

Charlestown lies within the Maryland in United States. The average daytime temperature in Charlestown in September is 78°F (25°C), while the nighttime average is 57°F (14°C). There are typically nine rainy days during the month, with a total precipitation of 4.2 inches (105 mm). The daylight duration in September in Charlestown is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 6 mph (9 km/h), and the humidity level is around 73%.

The water temperature in Charlestown in September ranges from 72°F to 79°F (22°C to 26°C). At the beginning of the month, the average temperature is around 77°F (25°C), shifting to 75°F (24°C) by mid-September and reaching 73°F (23°C) in the last ten days. Overall, the average sea temperature in Charlestown for September is 75°F (24°C). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.

Frequently Asked Questions About Water Temperatures in September in Charlestown