Climate Insights for Poznań

The climate in Poznań is temperate. The average annual temperature is 10°C and approximately 612mm of precipitation falls per year. Poznań receives a notable amount of rainfall throughout the year, including during its driest month. Poznań is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to -1°C. Light snow can occur between January and December.

Temperatures in Poznań vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 25°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -1°C and the daily average is 1°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Poznań is a relatively dry area, receiving approximately 612mm of precipitation annually, which averages out to around 51mm per month. The wettest month is July, averaging 85mm of rainfall. August and June also tend to see above-average precipitation. The driest month is April, with just 34mm. That's 51mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 25cm annually. January is the snowiest month with approximately 12cm.

Poznań is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 20km/h in winter, 19km/h in spring, 17km/h in summer, 18km/h in autumn.

It is currently spring in Poznań, which began on March 20, 2026. Poznań is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 25°C, while the coldest stretch bottoms out in January near -1°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Poznań is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 64mm per month. By contrast, January can be quite cold with temperatures dropping to -1°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Poznań based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.