If you're looking for summer vibes, the best time to travel to Gdansk is in August, June and July, when the average temperature reaches 20.61 °C, while May, June and August are the 3 sunniest months of the year, with an average of 129.18 hours.
However, if you prefer colder temperatures, make sure you visit Gdansk during January, February or March to experience an average of -1.01 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during February, March and April, when the average precipitation in Gdansk is 5.25 mm, while the months of January, February and March are drier, with an average of 0 mm.