Original sentence: The hottest months of the year are from June to September, with temperatures reaching an average high of 21 °C (66 °F) and 11 °C (52 °F) at night
Edited sentence: The hottest months of the year, and the best time for hitting the beach, are from June to September, with temperatures reaching an average high of 21 °C (66 °F) and 11 °C (52 °F) at night