While the winter anticyclone is unlikely this year according to experts, it could still actually happen. An "anticyclone located in Central Europe", more specifically in the Siberian region of Russia, can cause a "cooler and drier" air current to spread to other places in Europe, such as Portugal, during the meteorological winter (which starts on December 1).
Patrícia Gomes, the technician responsible for making forecasts for the Instituto Português do Mar e da Atmosfera (IPMA), explained the situation to Notícias ao Minuto, stating that this is not at all "abnormal", and can bring a sharp drop in temperatures to several European countries, although it is "northern Europe that will suffer most" from this phenomenon, explained the forecaster.
But despite forecasts warning of this possibility, it is still not possible to determine with certainty whether the temperature "this year will decrease more than normal", said Patrícia Gomes.
In fact, IPMA forecasts for the next four weeks even point to a different scenario. Citing the most recent monthly forecast from the meteorological institute, a "positive anomaly" is predicted when it comes to temperatures - that is, values "slightly above" what is expected for this time of year.
However, although the consequences of this anticyclone "for the beginning of winter" in Portugal are not foreseen, the truth is that "winter is three months" and, therefore, it is best to wait and see if this air current of "more cold and dry" weather will, or not, reach the country over the next few months.