Ireland, Britain, France and Poland, the biggest annual temperature difference may be

Poland. Poland has a temperate continental climate, with high temperature and humidity in summer, cold and dry in winter and large temperature difference. France, Britain and Ireland belong to temperate maritime climate, with cool summers and mild winters, and even rainfall throughout the year, especially Britain and Ireland. Due to the influence of the North Atlantic warm current, the temperature in winter is rarely below zero. The temperature difference in Poland is relatively large.