If there is something you don't need to worry about Paraguay climate is feeling cold. In fact, because of Paraguay’s intense summer heat and rain, winter months - May to September - are your best bet to visit the country.
The country is entirely landlocked - one of the two in the whole continent, together with Bolivia - and most of it lies below 450 m/1,500 ft.
Due to this fact, temperatures are almost uniformly hot in summer - the average high in summer is 35°C (95°F), with daily temperatures ranging between 25°C and 43°C - 77°F to 109°F.
In order to understand its climate, we need to consider Paraguay's geography, divided by Paraguay river in two main regions: the Paraneña and Chaco regions, with a subtropical and a tropical climate, respectively.
The Parañena is officially called Eastern Paraguay (Paraguay Oriental), while the Chaco region is known as Western Paraguay - Paraguay Occidental.
During the Southern Hemisphere's summer - December to March - the dominant influence on the climate is the warm sirocco winds blowing out of the northeast. During winter instead, the dominant wind is the cold pampero, blowing from the South Atlantic.
Due to the lack of topographic barriers, these opposite prevailing winds bring about abrupt and irregular changes in the usually moderate Paraguay weather, producing storms and sudden drops in temperature at times. Strong winds are not uncommon either.
So let's review each of its regions more in depth in order to better grasp what Paraguay climate is all about...
For official info regarding Paraguay climate and weather forecasts, please visit the Dirección de Meteorología e Hidrología - DINAC, site in Spanish.