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Chile Climate
https://photius.com/countries/chile/climate/chile_climate_climate.html
Sources: The Library of Congress Country Studies; CIA World Factbook

    The far north is the only part of the country in which there is a large section of the Andean (plateau). The area receives considerable rainfall during the summer months in what is commonly known as the "Bolivian winter," forming shallow lakes of mostly saline waters that are home to a number of bird species, including the Chilean flamingo. Some of the water from the plateau trickles down the Andes in the form of narrow rivers, many of which form oases before being lost to evaporation or absorption into the desert sands, salt beds, and aquifers. However, some rivers do manage to reach into the Pacific, including the Río Loa, whose U-shaped course across the desert makes it Chile's longest river. The water rights for one of the rivers, the Río Lauca, remain a source of dispute between Bolivia and Chile. These narrow rivers have carved fertile valleys in which an exuberant vegetation creates a stark contrast to the bone-dry hills. In such areas, roads usually are built half way up the arid elevations in order to maximize the intensive agricultural use of the irrigated land. They offer spectacular panoramic vistas, along with the harrowing experience of driving along the edges of cliffs.

    As in the for north, the coastal areas of the near north have a distinct microclimate. In those sections where the airborne moisture of the sea is trapped by high bluffs overlooking the ocean, temperate rain forests develop as the vegetation precipitates the vapor in the form of a misty rain. Because the river valleys provide breaks in the coastal elevations, maritime moisture can penetrate inland and further decrease the generally arid climate in those valleys. The higher elevations in the interior sections are covered with shrubs and cacti of various kinds.

    Central Chile (Chile Central), home to a majority of the population, includes the three largest metropolitan areas-- Santiago, Valparaíso, and Concepción. It extends from about 32° south latitude to about 38° south latitude. The climate is of the temperate Mediterranean type, with the amount of rainfall increasing considerably and progressively from north to south. In the Santiago area, the average monthly temperatures are about 19.5° C in the summer months of January and February and 7.5° C in the winter months of June and July. The average monthly precipitation is no more than a trace in January and February and 69.7 millimeters in June and July. By contrast, in Concepción the average monthly temperatures are somewhat lower in the summer at 17.6° C but higher in the winter at 9.3° C, and the amount of rain is much greater. In the summer, Concepción receives an average of twenty millimeters of rain per month; in June and July, the city is pounded by an average of 253 millimeters per month. The numerous rivers greatly increase their flow as a result of the winter rains and the spring melting of the Andean snows, and they contract considerably in the summer. The combination of abundant snow in the Andes and relatively moderate winter temperatures creates excellent conditions for Alpine skiing.

    The south is one of the rainiest areas in the world. One of the wettest spots in the region is Valdivia, with an annual rainfall of 2,535.4 millimeters. The summer months of January and February are the driest, with a monthly average precipitation of sixty-seven millimeters. The winter months of June and July each produce on average a deluge of 410.6 millimeters. Temperatures in the area are moderate. In Valdivia, the two summer months average 16.7° C, whereas the winter months average 7.9° C.

    In the northern part of the far south, there is still plenty of rainfall. For instance, Puerto Aisén, at 45°24' south latitude, receives 2,973.3 millimeters of rain per year. However, unlike in Valdivia, the rain falls more or less evenly throughout the year in Puerto Aisén. The summer months average 206.1 millimeters, whereas the winter months average 300 millimeters. The temperatures at sea level in Puerto Aisén average 13.6° C in the summer months and 4.7° C in the winter months. Although the area generally is chilly and wet, the combination of channels, fjords, snowcapped mountains, and islands of all shapes and sizes within such a narrow space makes for breathtaking views. The area is still heavily forested, although some of the native species of trees that grow in the central and southern parts of the country have given way to others better adapted to a generally colder climate.

    The southern part of the far south includes the city of Punta Arenas, which, with about 125,000 inhabitants, is the southernmost city of any appreciable size in the world. It receives much less precipitation; its annual total is only 438.5 millimeters, or a little more than what Valdivia receives in the month of June alone. This precipitation is distributed more or less evenly throughout the year, with the two main summer months receiving a monthly average of thirty-one millimeters and the winter months 38.9 millimeters, some of it in the form of snow. Temperatures are colder than in the rest of the country. The summer months average 11.1° C, and the winter months average 2.5° C. The virtually constant wind from the South Pacific Ocean makes the air feel much colder.


    NOTE: The information regarding Chile on this page is re-published from The Library of Congress Country Studies and the CIA World Factbook. No claims are made regarding the accuracy of Chile Climate information contained here. All suggestions for corrections of any errors about Chile Climate should be addressed to the Library of Congress and the CIA.

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Revised 27-Mar-05
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