What September feels like in Gdansk
For Gdansk, September is early autumn on the calendar. Mild afternoons make it easy to spend hours outdoors. There is little difference between day and night: nights are cool, and evenings feel much like the afternoon. Moist air is typical, yet it seldom feels heavy at this time of year.
Rain in Gdansk in September
Expect a mix of dry and wet days, with rain about one day in 3. A rainy day brings about 4.8 mm (0.2 in) on average — steady rain rather than a passing shower. That is close to Gdansk's typical rain per wet day for the whole year (about 4.8 mm).
Daylight and sunshine in September
Mid-month, Gdansk gets 12 h 49 min of daylight, from sunrise near 6:16 am to sunset near 7:05 pm. Compared with mid-August, the day has lost 2 h 10 min. Measured sunshine covers about 72% of the daylight — there are plenty of bright spells.
How September compares to the rest of the year
In Gdansk's temperature order, September sits as the 4th warmest month. Against August, the average high is 4°C (7.2°F) lower, with 24 mm less rain. The cooling trend carries on into October. October averages a high of 12.9°C (55.2°F).
Who September suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — good conditions for sitting outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Gdansk in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is Gdansk in September?
It feels mild: typical highs are 18.7°C (65.7°F), with lows near 12°C (53.6°F).
Does it rain a lot in Gdansk in September?
Quite a lot — 48 mm spread over about 10 days.
What should I wear in Gdansk in September?
Pack rain protection and sunglasses. There is little need to change for the evening.
Is September or October better for visiting Gdansk?
On our 12-month climate ranking, September comes out ahead (#1 of 12 vs #3). October is cooler.