🇫🇮 Helsinki vs 🇵🇱 Warsaw

Helsinki's climate is shaped by its peninsular position jutting into the Gulf of Finland, where the Baltic Sea moderates temperatures year-round — keeping winters milder and summers cooler than inland Finland. The city's complex coastline of bays, islands, and headlands creates pronounced microclimate variation, with exposed southern shores subject to maritime winds while sheltered inland valleys trap cold air in winter. Sea ice formation in late winter can temporarily shift coastal districts toward a more continental climate until the ice breaks up in spring.

Humid continental — cold winters, warm summers, variable transitional seasons

Warsaw has a typical Eastern European continental climate. Winters are cold and grey; summers are warm and increasingly sunny. The city sits in the flat Polish Plain with no geographic barriers to arctic air masses in winter or Mediterranean warmth in summer.