Poznan, where it's located

The climate of Poznan is moderately continental, characterized by cold winters, with temperatures often below freezing (0 °C or 32 °F), and mild or pleasantly warm summers.
The city is located in the central-western region of Poland.
The average temperature of the coldest month (January) is of -0.8 °C (30 °F), that of the warmest month (July) is of 19 °C (66 °F). Here are the average temperatures.
Poznan - Average temperatures
Min (°C)-4-3048111313951-2
Max (°C)2381420222524191362
Min (°F)252732394652555548413428
Max (°F)363746576872777566554336

Precipitation amounts to 525 millimeters (20.7 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 inch) in the driest month (February) to 75 mm (3 in) in the wettest (July). Here is the average precipitation.
Poznan - Average precipitation

On average, there are around 1,740 sunshine hours per year. Here are the average sunshine hours per day.
Poznan - Sunshine


Best Time

The best time to visit Poznan runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, it can be hot in July and August, while in other circumstances, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.