Argentina is mostly temperate and experiences (dry) southern summers between December and January and (wet) winters between June and July. Argentina is characterized by rich pampas in most of the territory, the Patagonia in the south, and rugged terrain from the Andes in the west. Climate can range from subtropical in the north to arid and cold in the south and along the Andean mountains in the west. Northeastern regions have tropical climate with warm temperatures and abundant precipitation all year round. Precipitation decreases toward the west, producing arid and almost desert-like environments at the foot of the Andes. The central region experiences semiarid with seasonal precipitation. Climate in the country is influenced by the El Niño Southern Oscillation, which increases average rainfall during El Niño years and produces drier conditions during La Niña years.
- Temperatures have increased gradually over the last half century by 0.5°C to 1°C with higher rates of growth in Patagonia (NDC, 2015).
- Argentina has experienced an increase in heat waves and a reduction in frost days in the last half century (NDC, 2015).
- The Southern regions of the country are expected to warm relatively faster than northern regions.
- Average minimum temperatures have increased more than average maximum temperatures in the past decades.
- Average monthly precipitation increased, particularly during the southern summer months from November to January, where average monthly precipitation ranged from 50-57mm in 1901-1930 and 60-70mm in 1991-2016.
- Precipitation patterns have high levels of inter-annual and decadal variation, however, there have been some noticeable increases in the eastern regions of the country that had traditionally experienced semi-arid conditions.
- The southern regions of the country and Andean highlands experienced a reduction in precipitation which affected natural water storage (snowpack and glaciers).
- Argentina has also experienced an increased incidence of heavy rainfall events that can sometimes lead to flooding (NDC, 2015).
This section provides the options to visualize historical climate data for different timeframes via map and annual cycle chart.