Argentina has a varied climate with Buenos Aires and the Pampas enjoying a temperate climate while Cuyo has a desert-type climate. The temperate climates have very cold winters, but it is also very hot and humid in the summer. The dessert areas are extremely hot and dry in the summer while the winters are cold and dry.
The Patagonia and Andes areas are cool in the summer and very cold in the winter, depending on the altitude. It is not uncommon in this area to see broad temperature shifts in a single day. Because Argentina is in the southern hemisphere, summer is from December until February.
The best time to visit Argentina is in the spring which runs from October to mid-December or in the fall which runs from April to mid-June.
Most visitors to Argentina use the bus system to travel throughout the country. They are much cheaper than traveling by plane and the trips are usually enjoyable. Long distance buses offer food service or restaurant stops as well. There are also smaller public transportation options, known as colectivos, which are older buses that travel short distances through cities or towns. Many allow you to wave them down to get on and you can ask to be dropped off outside of their regular stops. Buenos Aires has a Hop On Hop Off tourist bus with a route that lasts almost three hours. You can get off at a location and show your ticket to the driver at another location to hop back on.
Trains are another popular option to travel in Argentina. There are trains that run from Buenos Aires to Tucuman, Rosario, Rojas, Mar del Plata and Bahia Bianca. The Tucuman train offers dining and sleeping cars as well. A train also runs from Viedma ot San Carlos de Bariloch. Coach class on some trains may not have heat and it can be very cold during the winter months on those trains.
There are ferries that run from Buenos Aires to Colonia del Sacramento, Uruguay and Montevideo. The trip takes between one and five hours depending on which ferry you choose.
Taxi service is available but be sure to choose Radio Taxi which are black and yellow in the capital and white with blue lettering in the provinces. It is also possible to arrange for a hired car and driver either by calling the dispatcher or walking to a street front office with “Remise” in the window. You cannot flag those down on the street.