September in Corsica offers a unique blend of summer warmth and autumnal freshness. Typically, daytime temperatures range from the low 20s to the upper 20s Celsius (low 70s to low 80s Fahrenheit), creating comfortable conditions for outdoor activities. Sea temperatures remain inviting for swimming, while the diminishing crowds create a more relaxed atmosphere compared to the peak summer months.
This period presents an ideal time to explore the island. The pleasant climate allows for hiking, cycling, and watersports without the intense heat of July and August. Furthermore, the transition into autumn brings a shift in the landscape, with the maquis starting to display its autumnal hues. Historically, September has been a favored time for locals to enjoy the island after the summer tourist season, offering a glimpse into a more authentic Corsican experience.