When to Go

Temperatures in Buenos Aires Province rarely reach extremes. Note that some hotels and restaurants here only open on weekends outside of peak season—this coincides with school holidays in summer (January and February), winter (July), and the Easter weekend. You'll get great discounts at those that open midweek in winter.

November's a good time to visit San Antonio de Areco, which holds its annual gaucho festival then. Like Buenos Aires, it feels curiously empty in January, when everyone decamps to the coast. December through March is seaside peak season, and beach town establishments are usually booked up; make advance reservations. Beaches get cold and windy in winter (June-September).

Visit the Esteros del Iberá and Iguazú Falls April through October to avoid the heat and humidity. Argentineans usually go in July, when hotels book up (and prices soar). Though the falls are thrilling year-round, seasonal rainfall and upstream Brazilian barrages (minidams) can affect the falls' water volume. If you visit between November and March, booking a hotel with air-conditioning and a swimming pool is as essential as taking mosquito repellent.