September weather forecastRotonda West, FL
September
Weather in September
An excellent water temperature of 84.9°F (29.4°C) makes September in Rotonda West, Florida, a prime for swimming and other water activities.Ocean temperature
In September, the average ocean temperature is 84.9°F (29.4°C).Note: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.
Daylight
In September, the average length of the day is 12h and 18min.On the first day of September, sunrise is at 7:08 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:16 pm EDT.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Rotonda West, the average seawater temperature in September is 84.9°F (29.4°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.
The average day length in September is 12h and 18min.
On the first day of September, sunrise is at 7:08 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:16 pm EDT.
Average sea temperature in September
Rotonda West, FL
- Average sea temperature in September: 84.9°F
The best month for swimming (with the highest average sea temperature) is August (87°F).
The coldest month (with the lowest average sea temperature) is January (65.3°F).
Average daylight in September
Rotonda West, FL
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).





