In September the Maremma Sea normally offers a great variety of wind conditions. Very important to note that in 2009 the sheltered Gulf of Follonica ensures full program in the 98% of the events scheduled.
Here follows some details (referring to September 2013):
Wind Average: 10,4knots.
Daily Averages: from 5,2 to 18 knots
No Wind Days: 0
Plus 30 knots (High) Wind Days: 1
Temperature (High) Average : 23°C
Wind Direction: SE-S-SSW-E-NE- Sea breeze WNW up to 10 knots in high pressure situations.
Note that Sailing In and Out from the Marina is possible in every wind directions.
Sources: Marina di Scarlino Instruments and Lamma Rete Toscana.