The climate of the Island of Ischia during September offers a transition from the peak summer heat to the milder temperatures of autumn. Typically, daytime highs average in the mid-70s Fahrenheit (low 20s Celsius), while evenings cool down to the 60s Fahrenheit (high teens Celsius). Sea temperatures remain pleasant, generally in the low to mid-70s Fahrenheit (low 20s Celsius), making swimming and other water activities still enjoyable. Rainfall is possible but generally less frequent than in later autumn months.
This period presents an attractive time to visit the island. The slightly cooler temperatures provide more comfortable conditions for exploring the island’s diverse offerings, from its volcanic landscapes and thermal spas to its charming towns and historic sites. The beaches are less crowded than in July and August, offering a more relaxed experience. Furthermore, the sea remains warm enough for swimming and watersports, extending the summer season. Historically, September has marked the beginning of the harvest season, and visitors can often experience local festivals and culinary traditions celebrating the islands agricultural heritage.
