Poznań, in western Poland, has a temperate climate with cold, snowy winters and warm, often sunny summers. The city experiences four distinct seasons, moderate rainfall, and significant changes in daylight. Spring and autumn are pleasant and transitional, while summers are comfortable and winters can be long, windy, and mostly cloudy.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Poznań’s climate is a blend of continental and oceanic influences, resulting in pronounced seasonal contrasts. Winters (December–February) are cold and often snowy, with average highs of 1–3°C and lows around -3°C. Snow cover is common, especially in January and February, and damp, windy conditions are typical. Winter days are short, with only 1–2 hours of sunshine and about 8 hours of daylight. Frosts are frequent, and night temperatures can drop below -10°C during cold snaps.
Summers (June–August) are warm and comfortable, with average highs of 22–24°C and lows of 12–14°C. July is the warmest month, and heatwaves above 30°C can occur, though nights often remain cool. Summers are partly cloudy, with up to 7–8 hours of sunshine daily and long daylight hours (up to 17 hours in June). Rainfall peaks in July, mainly due to short, intense thunderstorms, but the city is relatively dry overall, with annual precipitation around 500–700 mm. Spring (March–May) and autumn (September–November) are transitional, with mild temperatures (10–19°C in spring, 8–19°C in autumn), blooming gardens or colourful foliage, and moderate rainfall. Winds are generally light to moderate, but can be brisk in winter and spring.
| Average climate data for Poznań, Poland | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 2 | 3 | 8 | 14 | 20 | 22 | 24 | 25 | 19 | 14 | 7 | 3 | 25 |
| Average minimum temperature (°C) | -5 | -4 | -0 | 6 | 10 | 14 | 16 | 15 | 11 | 6 | 2 | -3 | -5 |
| Average precipitation (mm) | 33 | 27 | 38 | 31 | 50 | 58 | 76 | 61 | 42 | 34 | 35 | 40 | 526 |
| Average rainfall days (days) | 14 | 12 | 11 | 9 | 11 | 12 | 13 | 13 | 9 | 12 | 14 | 12 | 142 |
| Average relative humidity (%) | 80 | 82 | 74 | 67 | 64 | 67 | 70 | 72 | 74 | 77 | 80 | 81 | 74 |
| Average daily daylight hours (h) | 8 | 9 | 11 | 14 | 15 | 16 | 16 | 14 | 12 | 10 | 8 | 7 | 12 |
| Average daily sunshine hours (h) | 1 | 2 | 3 | 6 | 7 | 7 | 7 | 7 | 5 | 3 | 1 | 1 | 4 |
| Average UV index | 1 | 1 | 2 | 4 | 5 | 6 | 6 | 5 | 4 | 2 | 1 | 0 | 3 |
The best time to visit Poznań is from May to September, when temperatures are mild to warm (18–24°C), days are long and sunny, and the city is vibrant with festivals and outdoor events. Late spring and early autumn are especially pleasant for sightseeing, with comfortable weather and fewer crowds.
The least favourable time to visit Poznań is from November to February, when days are short, temperatures are cold (1–3°C), and rain, snow, and wind are frequent. While the city is festive during the holidays, outdoor activities are limited and some attractions may have reduced hours.
Poznań’s annual average temperature is about 8–9°C. January is the coldest month (highs 1–2°C, lows -3°C), while July and August are the warmest (highs 23–24°C, lows 13–14°C).
Poznań receives about 500–700 mm of precipitation annually. Rain falls year-round, with July being wettest. Snow is common in winter but rarely heavy or long-lasting.
Poznań enjoys 1,750–1,900 hours of sunshine per year. The sunniest months are June to August (up to 7–8 hours/day), while December and January are the least sunny (1–2 hours/day).
Late spring (May–June) and early autumn (September) are best for outdoor activities, with mild to warm temperatures, long days, and more sunshine. Summer is ideal for festivals and exploring the city’s parks.
Poznań itself is not a winter sports destination. Snow is common but not heavy, and temperatures are too mild for reliable ice or snow-based activities. For winter sports, visit the mountains in southern Poland.
Swimming outdoors is most comfortable in July and August, when air temperatures reach 23–24°C. Even then, the water in lakes and pools can be cool, so beach activities are limited.
Pack layers for spring and autumn, light clothing and sun protection for summer, and insulated, waterproof clothing for winter. An umbrella and windproof jacket are useful year-round.
The warmest month, with the highest average maximum temperature, is August (24.5 °C). The month with the lowest average maximum temperature is January (2.3 °C). Overall, the average maximum temperature over the whole year is 13.4 °C.
The month with the highest average minimum temperature is July (15.6 °C). The coldest month, with the lowest average minimum temperature, is January (-4.7 °C). Overall, the average minimum temperature over the whole year is 5.7 °C.
The wettest month, with the highest amount of precipitation, is July (76.3 mm). The driest month, with the least amount of precipitation, is February (26.7 mm). Over the whole year there are 525.9 mm of rainfall on average.
The month with the most days of rain is November (14 days). The month with the fewest days of rain is April (9.1 days). Over the whole year there are 142.3 days of rain on average.
The month with the highest average relative humidity is February (82.5 %). The month with the lowest average relative humidity is May (64.1 %). The overall average relative humidity over the whole year is 74.1 %.
The month with the longest days, so the most daylight, is June (Average daylight: 16.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 7.1 h). Over the whole year there are 11.7 h of daylight per day on average.
The month with the most sunshine per day is May (Average sunshine: 7.1 h). The month with the least sunshine per day is December (Average sunshine: 1 h). Over the whole year there are 4.2 h of sunlight per day on average.
The months with the highest average UV index are June and July (UV index: 6). The month with the lowest average UV index is December (UV index: 0). Over the whole year the average UV index is 3.1.
