For further information on this matter you should contact the Federaci n de Andinismo de Chile, at Almirante Simpson 77, Santiago, Chile. There are good rescue facilities in Chile, should you get into trouble but you may be charged for the service provided. Insurance covering such eventualities is essential. Climate Seasons are well marked. But the climate varies dramatically with altitude and between the country's extremities.
Easter Island has a mild tropical climate.
Air pollution in Santiago during winter is a major problem. You may therefore suffer from eye irritation and respiratory system problems. Some cholera cases have recently occurred outside of Santiago. However, it is an easy disease to avoid if you follow basic hygiene rules and avoid uncooked vegetables. Bottled mineral water is recommended and is widely available.