Land and Resources, Climate
tropic of Capricorn, extreme north, Fuego, Tierra, Mendoza
Temperate climatic conditions prevail throughout most of Argentina, except for a small tropical area in the northeast and the subtropical Chaco in the north. In Buenos Aires the average temperature range is 20° to 30°C (67° to 86°F) in January and 8° to 15°C (46° to 60°F) in July. In Mendoza, in the foothills of the Andes to the west, the average temperature range is 16° to 32°C (60° to 90°F) in January and 2° to 15°C (35° to 59°F) in July. Considerably higher temperatures prevail near the tropic of Capricorn in the north, where extremes as high as 45°C (113°F) are occasionally recorded. Climatic conditions are generally cold in the higher Andes, Patagonia, and Tierra del Fuego. In the western section of Patagonia winter temperatures average about 0°C (32°F). In most coastal areas, however, the ocean exerts a moderating influence on temperatures.
Precipitation in Argentina is marked by wide regional variations. More than 1,520 mm (60 in) fall annually in the extreme north, but conditions gradually become semiarid to the south and west. In the vicinity of Buenos Aires annual rainfall is about 950 mm (about 37 in). In the vicinity of Mendoza annual rainfall is about 190 mm (about 7 in).
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