Also i imagine that there is better weather there, for example more sun and probably hotter.
I wish you were right... Actually, Gdańsk and the coastal area in general is not as warm as Kraków or Wrocław in the summer. But the winters tend to be milder here...
And it's very often windy, which can be a real pain...
Poland is rain sun rain sun rain sun too
I'd go for a slightly different version:
rain rain rain rain sun rain ;)