When to come to Poland

Poland offers both the sea and the mountains. However, the water in the Baltic Sea never gets really warm and if you want to enjoy some swimming the best idea is to come in August and the warmest water is in Zatoka Gdańska. Sometimes it’s not very clean. The seaside offers really beautiful beaches and you should see them yourself.
The mountains are not as high as the Alps but you’ll find them nice. Zakopane is the most popular place so you shouldn’t go there during high season (December-February) if you don’t like crowds of tourists.
People who enjoy real nature must go either to Puszcza Białowieska or to Bieszczady Mountains. I think the best time is spring (April-May).
In general Poland looks very nice in spring and the temperatures range from 10 to 25 degrees Celsius. Nights tend to be quite cold (frost possible).
So if you want to enjoy your stay the best time is spring. If you like historic places, go to Kraków and Auschwitz.
Poland is really attractive and the prices are still not very high. You won’t be disappointed but do come in spring.