Gibraltar has a subtropical Mediterranean climate (Köppen climate classification Csa), with mild winters and warm summers. Rain occurs mainly in winter, with summer being generally dry. Its average annual temperature is about 21 °C (70 °F) during the day and15 °C (59 °F) at night. In the coldest month, January, the temperature ranges from 11–18 °C (52–64 °F) during the day and 9–14 °C (48–57 °F) at night, the average sea temperature is 15–16 °C (59–61 °F). In the warmest month, August, the typically temperature ranges from 25–31 °C (77–88 °F) during the day, above 20 °C (68 °F) at night, the average sea temperature is 22 °C (72 °F)
