The climate of Gibraltar is Mediterranean/Subtropical with mild winters and warm summers. Gibraltar has two main prevailing winds, an easterly one known as the Levante coming from the Sahara in Africa which brings humid weather and warmer sea currents and the other as Poniente which is westerly and brings fresher air and colder sea. Its terrain consists of the 4300NaN0[1] high Rock of Gibraltar and the narrow coastal lowland surrounding it. Rain occurs mainly in winter; the summers are generally dry.
Average morning relative humidity: 82%, evening relative humidity: 64%.[2] Sunshine hours are up to 2,778 per year, from 150 in November (~5 hours of sunshine per day) to 341 in July (~11 hours of sunshine per day).[3]
Its average annual temperature is 18.8°C: 21.7°C during the day and 15.8°C at night. In the coldest month - January - the typical temperature ranges from 11C18C during the day and 9C14C at night (sometimes above and below these temperatures). The average sea temperature is 15C16C. In the warmest month - August - the typical temperature ranges from 25C31C during the day, and averages 21.2°C at night, and the average sea temperature is 22°C. The average number of days above 21°C is 181, average number of days above 32°C is 5-6 (2 in July, 3 in August). The highest temperature ever recorded was 40.6°C on 5 July 1994 while the lowest temperature ever recorded was 0°C on 13 January 1978.[4]