Climate means the usual condition of the temperature, humidity, atmospheric pressure, wind, rainfall, and other meteorological patterns in an area of the Earth's surface for a long time. In simple terms, climate is the average condition for about thirty years. Climate and weather are different: weather is the day to day conditions in the atmosphere.
The Mediterranean climate is usually hot and dry in summer, and is cool and wet in winter. An example of a country with a Mediterranean climate is Spain.