Gdynia
September
Weather in Gdynia for September 2026
Your guide to Gdynia weather in September - trends and predictions
In general, the average temperature in Gdynia at the beginning of September is 22 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.1 °C by the end of September.
The climate of Gdynia in September is notably wet, with an average of 11 rainy days, and a total of 55.3 mm of precipitation.
Temperatures
Rain 🌧️
19
Dry days
11
Rainy days
0
Snow days
20°/14°
Temperatures
23 km/h
Avg max wind
71 %
Avg humidity
Gdynia Weather September
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Temperatures trend during September in Gdynia
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September weather in Gdynia day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 20° /14° | 0 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 21° /15° | 2.3 mm | 5 | |
| 3 Sept. |  Sunny | 22° /16° | 0 mm | 6 | |
| 4 Sept. |  Partly cloudy | 24° /17° | 0 mm | 6 | |
| 5 Sept. | Partly cloudy | 24° /17° | 1.5 mm | 6 | |
| 6 Sept. | Partly cloudy | 21° /16° | 0.6 mm | 5 | |
| 7 Sept. | Partly cloudy | 22° /16° | 0.2 mm | 6 | |
| 8 Sept. | Sunny | 24° /17° | 0.2 mm | 6 | |
| 9 Sept. |  Heavy rain at times | 23° /17° | 1.5 mm | 6 | |
| 10 Sept. |  Moderate rain at times | 20° /14° | 2.8 mm | 5 | |
| 11 Sept. | Patchy rain possible | 19° /13° | 14.1 mm | 4 | |
| 12 Sept. | Heavy rain at times | 18° /13° | 3.9 mm | 5 | |
| 13 Sept. | Moderate rain at times | 18° /12° | 6.3 mm | 5 | |
| 14 Sept. | Patchy rain possible | 16° /14° | 7.1 mm | 4 | |
| 15 Sept. | Moderate rain at times | 18° /14° | 2.8 mm | 4 | |
| 16 Sept. |  Cloudy | 19° /15° | 0.1 mm | 5 | |
| 17 Sept. | Sunny | 19° /14° | 0.1 mm | 5 | |
| 18 Sept. | Partly cloudy | 19° /14° | 0.1 mm | 5 | |
| 19 Sept. | Sunny | 20° /15° | 0.2 mm | 5 | |
| 20 Sept. | Sunny | 22° /15° | 0 mm | 6 | |
| 21 Sept. | Sunny | 22° /15° | 0.2 mm | 6 | |
| 22 Sept. | Sunny | 17° /12° | 2.2 mm | 5 | |
| 23 Sept. | Sunny | 18° /12° | 0.8 mm | 5 | |
| 24 Sept. | Partly cloudy | 18° /12° | 0.3 mm | 5 | |
| 25 Sept. | Patchy rain possible | 16° /12° | 0.3 mm | 4 | |
| 26 Sept. | Moderate or heavy rain shower | 16° /12° | 3.7 mm | 4 | |
| 27 Sept. | Patchy rain possible | 16° /12° | 0.9 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /11° | 0.4 mm | 4 | |
| 29 Sept. | Patchy rain possible | 13° /9° | 0.7 mm | 3 | |
| 30 Sept. | Overcast | 12° /9° | 1.9 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Gdynia 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 Gdynia forecast closer to your planned date for the most up-to-date weather information.
Change Month
Gdynia in September - FAQ
What are the expected maximum and minimum temperatures in Gdynia during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Gdynia during September?
Moderate rainfall is anticipated in Gdynia during September, with a total of 55.3 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Gdynia during September?
The average wind speed in Gdynia during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Gdynia
Explore the daily rainfall trends and prepare for Gdynias September weather 💧
UV exposure in Gdynia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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