Gdańsk
September
Weather in Gdańsk for September 2026
Your guide to Gdańsk weather in September - trends and predictions
Until now, September 2026 in Gdańsk is cooler than usual, with temperatures averaging 18.4 °C, this is 3.1 °C below the typical seasonal average.
The forecast for the next days in Gdańsk predicts a temperature of 15.9 °C, which is cooler than the historical average.
In general, the average temperature in Gdańsk at the beginning of September is 21.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13 °C by the end of September.
Gdańsk experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 36.3 mm.
Temperatures
Rain 🌧️
21
Dry days
9
Rainy days
0
Snow days
21°/13°
Temperatures
20 km/h
Avg max wind
68 %
Avg humidity
Gdańsk Weather September
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Temperatures trend during September in Gdańsk
See the weather trend as well as the moving average line
September weather in Gdańsk day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy light drizzle | 20° /12° | 0.8 mm | 4 | |
| 2 Sept. |  Partly cloudy | 21° /13° | 1.2 mm | 5 | |
| 3 Sept. |  Overcast | 22° /13° | 1.7 mm | 5 | |
| 4 Sept. | Overcast | 23° /14° | 1.8 mm | 5 | |
| 5 Sept. |  Sunny | 23° /14° | 1 mm | 5 | |
| 6 Sept. |  Patchy rain possible | 22° /14° | 1.1 mm | 5 | |
| 7 Sept. | Partly cloudy | 22° /14° | 0.2 mm | 5 | |
| 8 Sept. | Sunny | 25° /15° | 0.1 mm | 5 | |
| 9 Sept. | Overcast | 24° /15° | 0.2 mm | 5 | |
| 10 Sept. | Sunny | 22° /13° | 0.7 mm | 5 | |
| 11 Sept. | Sunny | 20° /12° | 6.9 mm | 4 | |
| 12 Sept. | Partly cloudy | 21° /12° | 1.3 mm | 5 | |
| 13 Sept. | Patchy rain possible | 19° /11° | 3.9 mm | 4 | |
| 14 Sept. | Light rain shower | 17° /12° | 4 mm | 3 | |
| 15 Sept. | Sunny | 18° /11° | 0.7 mm | 4 | |
| 16 Sept. | Overcast | 22° /13° | 1.7 mm | 2.9 | |
| 17 Sept. | Overcast | 19° /12° | 0.4 mm | 5 | |
| 18 Sept. | Overcast | 20° /12° | 0 mm | 5 | |
| 19 Sept. | Sunny | 21° /10° | 0 mm | 6 | |
| 20 Sept. | Patchy rain possible | 20° /11° | 1.4 mm | 5 | |
| 21 Sept. | Patchy rain possible | 16° /11° | 2.5 mm | 4 | |
| 22 Sept. | Light rain shower | 15° /10° | 4.5 mm | 3 | |
| 23 Sept. | Light rain shower | 13° /10° | 5 mm | 3 | |
| 24 Sept. | Patchy rain possible | 14° /10° | 5.8 mm | 3 | |
| 25 Sept. | Patchy rain possible | 15° /10° | 3.2 mm | 3 | |
| 26 Sept. | Patchy rain possible | 12° /9° | 3.7 mm | 3 | |
| 27 Sept. | Light rain shower | 11° /9° | 17.8 mm | 3 | |
| 28 Sept. | Light rain shower | 9° /7° | 11.6 mm | 2 | |
| 29 Sept. | Patchy rain possible | 16° /10° | 0.3 mm | 4 | |
| 30 Sept. | Patchy rain possible | 14° /9° | 0.9 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Gdańsk in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Gdańsk forecast closer to your planned date for the most up-to-date weather information.
Change Month
Gdańsk in September - FAQ
What are the expected maximum and minimum temperatures in Gdańsk during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Gdańsk during September?
In September, Gdańsk can expect light to moderate rainfall, totaling 36.3 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Gdańsk during September?
The average wind speed in Gdańsk during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Gdańsk
Explore the daily rainfall trends and prepare for Gdańsks September weather 💧
Typically, Gdańsk has 9 rainy days in September with a total of 36.3 mm of rainfall.
UV exposure in Gdańsk during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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