The climate of Gibraltar is Mediterranean/Subtropical with mild winters and warm summers. There are 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 430-metre (1,411 ft) 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%. Sunshine hours is till 2,778 per year, from 150 in November (5 hours of sunshine every day) to 341 in July (11 hours of sunshine every day).
Its average annual temperature is 18.2 °C (64.8 °F): 21 °C (70 °F) during the day and 15 °C (59 °F) at night. In the coldest month - January, the typically temperature ranges from 11–18 °C (52–64 °F) during the day and 9–14 °C (48–57 °F) at night (sometimes above and below these temperatures), 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). Average number of days above 21 °C (70 °F) is 181, average number of days above 32 °C (90 °F) is 5-6 (2 in July, 3 in August). The highest temperature ever recorded is 40.6 °C (105.1 °F) on July 5, 1994 while the lowest temperature ever recorded is 0.0 °C (32.0 °F) on January 13, 1978.