Weather in September
The perfect water temperature of 83.1°F (28.4°C) makes September a great period for swimming and other water activities in Saint Augustine South, Florida.
Note: Swimming, diving, and similar water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as very agreeable and pleasurable for lengthy periods without discomfort.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:11 pm EDT.
Ocean temperature
In Saint Augustine South, in September, the average water temperature is 83.1°F (28.4°C).Note: Swimming, diving, and similar water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as very agreeable and pleasurable for lengthy periods without discomfort.
Daylight
In Saint Augustine South, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:11 pm EDT.
Updated: Feb 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
How warm is the water in September in Saint Augustine South?
In September, the average ocean temperature in Saint Augustine South, Florida, is 83.1°F (28.4°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the average length of the day in September in Saint Augustine South?
In September, the average day length is 12h and 20min.
When are sunrise and sunset in September in Saint Augustine South?
On the first day of September in Saint Augustine South, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.
Average sea temperature in September
Saint Augustine South, FL
- Average sea temperature in September: 83.2°F
The best month for swimming (with the highest average sea temperature) is August (83.8°F).
The coldest months (with the lowest average sea temperature) are January and February (64.3°F).
Average daylight in September
Saint Augustine South, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
Saint Augustine South, Florida, USA
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