Gdansk Weather in September

September weather

Gdansk feels mild in September, with highs around 18°C and cooler evenings near 13°C. There's rain on 12 days, but showers don't usually rule out a day of sightseeing. The Old Town, Long Market and European Solidarity Centre all work well between showers.

You'll get less daylight than in summer, so leave time for outdoor sights before evening. The waterfront can feel cool and grey, and the Baltic is chilly; don't plan your trip around long swims. August is warmer and wetter, while October is cooler and slightly wetter.

What to do

September suits walking around the historic centre, visiting museums and taking a boat trip on the Motława when conditions are calm. For a quieter coastal outing, stroll the path through Brzeźno towards Jelitkowo, but expect damp weather at times.

Families who prefer mild days to summer heat may find September easier for exploring Gdańsk on foot.

On September 1, ceremonies at Westerplatte mark the start of the Second World War. It's a solemn event, not a festival, and a meaningful reason to visit the peninsula. Take bus transport towards Westerplatte, then allow time to walk around the memorial grounds.

Crowds and costs

Summer school holidays are over, so the Long Market and popular waterfront spots tend to feel less packed than in July and August. September is still a popular month, though, and weekends can stay busy. Accommodation and flights often cost less than during peak summer, but prices vary.

A practical tip: check the Westerplatte bus route before you go. The peninsula is outside the centre, and the walk between its memorial sites is exposed if rain rolls in. For dinner back in town, try pierogi or fresh fish around the Old Town rather than expecting a beachside meal at Brzeźno.