The best season to sail in the Mediterranean is typically late spring to early autumn, from May to September.
May and June are fantastic months, as the weather is warm but not excessively hot, with temperatures ranging from the mid-70s to low 80s Fahrenheit (around 24-28°C). The winds are generally stable and this period sees fewer tourists.
July and August can be quite hot, with temperatures soaring into the 90s Fahrenheit (over 32°C) in many regions, especially in southern parts of Spain. These months attract a lot of tourists, popular destinations can be crowded, but it’s also when you can enjoy most festivals and nightlife.
September and October marks a transition back to more pleasant temperatures, ideal for sailing. The summer crowds diminish and the sea remains warmer compared to spring.