Remember that the seasons are reversed in the Southern Hemisphere:
- Spring - September to December
- Summer - December to March
- Fall - March to June
- Winter - June to September
| Country | When to Go |
| Argentina | Buenos Aires - any time Iguazu Falls - winter or spring Patagonia - summer Andes for skiing - winter High season is January and February |
| Bolivia | Avoid the rainy season in the lowlands between November to March Altiplano - winter Lowlands and rain forest - April to October |
| Brazil | Cities - any time Carnaval in February Amazon - avoid rainy season between November to May High season is November to April |
| Chile | Northern Chile - any time, November is best Middle Chile - September to February Southern Chile - December to March Easter Island and Juan Fernandez - March High season is January - February and July and August for skiing |
| Colombia | Dry season in December - March in the mountains; December to April and July to September on the coast High season is December to February |
| Ecuador | Rainy season is December to May
Galapagos - January to April is hot and humid; tour boats docked in September and October
Coast - avoid rainy season
Quito and highlands - any time of year
Amazon - avoid rainy season High season is December to February |
| Falkland Islands | October to March |
| French Guiana | Rainy season is January to June, heaviest rain in May Travel between July to December High season is February Carnival |
| Guyana | Best time is mid-October to mid-May, after rainy seasons ending in late January
and late August Travel in the interior is best in dry season |
| Paraguay | Rainy season in December to April with frequent flooding in the southeast very hot between October and March Dry season travel (June to August) is easier. |
| Peru | Lima - avoid foggy time in June - December Coastal desert - any time of year Andes - avoid rainy periods between October - April Rainforest - hot and humid all year; avoid January - April High season is May to September |
| Suriname | Rainy season is April to July, December and January Best times are mid-August to early December |
| Uruguay | Best time to visit is mid-October to late March; be prepared for heat and humidity High season is January and February |
| Venezuela | Dry season is December to April; but May to October is still nice and prices are lower High season is Christmas, February Carnival and Easter |
