Latin America is a large and geographically diverse continent with a wide range of climates and in each country's usually has more than one micro-climate.
In most of Argentina, Brazil, Chile and Mexico the climate is as near perfect as you can get during dry season (November to April) where daytime temperatures are similar to Hong Kong or Japan in the autumn, but with sunny blue skies and less humidity.
Patagonia is seasonal and best visited when the days are longer from October to April.
The Pantanal and the Andean region which includes Peru, Ecuador and northern Chile is best visited May to October.
In coastal Brazil and its Amazon basin and the Peruvian and Ecuadorian rainforests the climate is more sub-tropical similar to Asia in the summer.
In Mexico, November to April is the dry season and just like in Asia, the country receives its fair share of typhoons/hurricanes fromm June to October.
The Galapagos Islands has two distinct seasons and is a year-round destination: A wet/hot season from December to May and a dry/cool season from June to November.
Bolivia's altiplano and Salar de Uyuni has two seasons: the dry season from May to October when the entire area is accessible and the wet season from November to April when the lagoons are inaccessible but this is when the salt pans turn into a giant mirror.
Antarctica's tourist season runs for only five months - from the beginning of November to the end of March - but the climate is spectacular during its spring/summer/fall seasons with its long (up to 20 hours) blue sky days and temperatures at or just below zero degrees centigrade at most times (although temperatures as high as 15 degrees centigrade have been recorded along the Antarctic Peninsula). Antarctica is also often referred to as the White Desert as it is extremely dry and averaging only 6 inches or rainfall a year, mostly during its winter months.