Sea Temperature in Jamestown in September

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

Jamestown Climate and Swimming Opportunities in September

Jamestown lies within the Rhode Island in United States. The average daytime temperature in Jamestown in September is 68°F (20°C), while the nighttime average is 50°F (10°C). There are typically nine rainy days during the month, with a total precipitation of 2.1 inches (55 mm). The daylight duration in September in Jamestown is 12 hours, with an average of 8 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 Jamestown in September ranges from 64°F to 70°F (18°C to 21°C). At the beginning of the month, the average temperature is around 70°F (21°C), shifting to 68°F (20°C) by mid-September and reaching 66°F (19°C) in the last ten days. Overall, the average sea temperature in Jamestown for September is 68°F (20°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in September in Jamestown