Most historic cities of the Mediterranean Basin lie within Mediterranean climatic zones, including Algiers, Athens, Barcelona, Beirut, Casablanca, İzmir, Jerusalem, Lisbon, Marseille, Naples, Rome, Tunis, Valencia, and Valletta. The major climatic types are based on patterns of average precipitation, average temperature, and natural vegetation. Sea water temperature in some cities on the Mediterranean Sea coast is above 20°C/68°F and it is enough for comfortable bathing. Although global climate models vary in many ways, they agree on this: The Mediterranean region will be significantly drier in coming decades, potentially seeing … Long-term weather averages give the best indication of the weather in December 2020 and include figures for temperature, sunshine and rainfall for the Mediterranean. Some coastal locations (such as southern California in the western United States) exhibit relatively cool summer conditions and frequent fogs where cold offshore currents prevail. The regions are located in the western parts of the continent between 30 and 45 degrees north and south of the equator. In contrast, San Francisco has cool summers with daily highs around 21 °C (70 °F) due to the continuous upwelling of cold subsurface waters along the coast. Winter temperatures are usually between 30 and 65 degrees. The fynbos vegetation in the South-western Cape in South Africa is famed for its high floral diversity, and includes such plant types as members of the Restionaceae, Ericas (Heaths) and Proteas. Southern California's coasts also experience hot summers due to the shielding effect of the Channel Islands. The largest area with a mediterranean climate is the Mediterranean Basin, which has given the climate its name, although stretches of the Mediterranean coast (in Egypt, Libya and part of Tunisia) are too dry to be thus classified. Clear skies and high temperatures; hot, dry summers and cool, wet winters. The winter and summer temperatures, however, vary depending on the geographical location of the regions and are greatly affected by water temperature and the changes in ocean currents. Csb zones in the Köppen system include areas normally not associated with Mediterranean climates but with Oceanic climates, such as much of the Pacific Northwest, much of southern Chile, parts of west-central Argentina, and parts of New Zealand. Under the Köppen climate classification, "hot dry-summer" climates (classified as Csa) and "cool dry-summer" climates (classified as Csb) are often referred to as "Mediterranean". Regions with this climate are influenced by the dry-summer trend that extends considerably poleward along the west coast of the Americas, as well as the moderating influences of high altitude and relative proximity to the Pacific Ocean. Where's hot in the Mediterranean? The main cause of Mediterranean, or dry summer climate, is the subtropical ridge which extends northwards during the summer and migrates south during the winter due to increasing north-south temperature differences. Toward the polar latitudes, total moisture usually increases; for instance, the Mediterranean climate in Southern Europe has more rain. Areas with this climate are where the so-called "Mediterranean trinity" of agricultural products have traditionally developed: wheat, grapes and olives. This sub­type of the Mediter­ranean cli­mate (Csa) is the most com­mon form of the Mediter­ranean cli­mate, there­fore it is also known as a “typ­i­cal Mediter­ranean cli­mate”. It represents the dividing line between two major physiological groups of evolved plants. As stated earlier, regions with this form of a Mediterranean climate experience average monthly temperatures in excess of 22.0 °C (71.6 °F) during its warmest month and an average in the coldest month between 18 and −3 °C (64 and 27 °F) or, in some applications, between 18 and 0 °C (64 and 32 °F). A Mediterranean climate /ˌmɛdɪtəˈreɪniən/ or dry summer climate is characterized by dry summers and mild, wet winters. These locations are found at high altitude nearby lower altitude regions characterized by a warm-summer Mediterranean climate (Csb) or hot-summer Mediterranean climate (Csa). The cities of across the southern position there is an average high of 73 in July 130! In December 2020 for its species and cultivar diversity in spring and September in the coasts! The season transitions into more wintery weather its name from the Atlantic by! Is one of the regions are located in the western coasts of continents the high! 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