The location of today’s Finland is one of the most special amongst the Nordic countries, because this is the northernmost of all. Its surface used to be covered by glaciers, that is what formed the land the most and gave its distinctive landscape; a huge peninsula with thousands of tiny little islands and lakes (180 thousand of each), the lack of high hills, 69% of the mountainous surface is covered by forest, 10% by water. The biggest lake is the Saimaa, and the highest point is Halti with 1324 m (the summit of the mountain is actually in Norway).
In terms of its climate, I only have to say so much, that the location of the country speaks for itself. I will not go into details about which weather systems and how they affect the climate and temperatures of Finland, it is enough to know, that the winters are cold (zero - (-30) degree Celsius), and the summers are relatively hot (20-32 degree Celsius).
The conclusion is that it is far more pleasant in the South than it is in the North, but the constant winds and clouds will still make the weather rather unpredictable. And this can only mean one thing; the current weather can change very quickly – sometimes even in a matter of just a few minutes – so you better be ready for rain and storm, an umbrella and layered clothing are a must.