Climate Overview

Finland stretches over 1,160 kilometers from south to north — equivalent to the distance from Munich to Sicily. Accordingly, the climate varies significantly:

Region	Summer (Jun–Aug)	Winter (Dec–Feb)	Special Feature
Helsinki & South	15–25°C	-5 to -15°C	Mildest climate, short winters
Lake District	15–25°C	-10 to -20°C	Continental, extreme temperature fluctuations
Archipelago Coast	15–22°C	-3 to -10°C	Maritime moderate, rarely extreme frost
Lapland	10–20°C	-15 to -40°C	Arctic, up to 200 snow days/year

Daylight is the crucial factor: In December, Helsinki has only 6 hours of daylight, in northern Lapland, there is polar night (kaamos) — the sun does not rise at all. In June, however, the sun hardly sets in Helsinki, and in Lapland, the midnight sun shines around the clock.