WEATHER & CLIMATE
In general, Patagonian climate is moderate. Its seasons are well defined, however, we can say that fall and spring are short while winters are long.
There is great thermal amplitude between summer and winter, as well as a substantial temperature difference between day and night.
The average winter temperature is -2ēC and summer maximum temperatures can reach 40ēC in the Rio Negro High Valley area. In Tierra del Fuego, temperatures rise to 18ēC and annual rainfalls can be of approximately 800 mm.
To be able to travel safely and enjoy the Patagonian landscape, the best time is summer, between the months of December and March, although this excludes the snow lovers.
Another characteristic of the Patagonian climate is the wind. It can blow up to 100 km/h, mainly in the central and Antarctic areas.
Besides these seasond, the Andes range plays an important role in the climate of the Argentinean regions and due to this mountain range, Patagonia is a region with arid and semi-desertic climate.
The polar sea air from the Pacific carries almost all its humidity to the other side of the Andes. The sub-polar air takes part in the formation of moving depressions and goes from the south to the north of the country. That is why, Andean Patagonia is humid, rainfall exceeds 2,000 mm a year and it gets drier toward the Atlantic zone, where the average rainfall is only 200 mm.
Winters are very cold and sometimes roads are blocked due to the heavy snow storms.
Prevailing winds blow in from the West, so the Patagonian waters are generally calm, offering a landscape of spreading beauty.
In fall, western winds are less frequent than during the rest of the year. That is why, the heaviest storms are caused by the south-east wind known as "Sudestada".
In the southern region, unlike the rest of the country, the approximation of the Pacific and Atlantic oceans moderate temperature and green grass can be seen in some areas.
The Fueguian archipelago belongs to the sub-antarctic area, its weather is cold and winds blow in with great force mainly from the western sector, all year-round, particularly from the end of August to March in fall and spring.
The Andes Range, which draws up a curve from the northwest to the east along the archipelago, causes intense rainfall in the western and southern isles, and less humidity in the northeastern plateaus.
In the Beagle Channel, temperatures rise to 18ēC in summer and -14ēC in winter, however, in the plateaus, temperatures are even more extreme.