Poznań weather in January
January in Poznań: cold, a little rain, with clean air — one of the weakest months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in Poznań · #1276 of 1413 destinations to visit in January · comfort 41/100 (tier F)
- Days
- 4°C
- Nights
- -2°C
- Wet days
- 12
- Sun
- 2.8 h
- Humidity
- 85%
- Daylight
- 8 h

Traveller notes on Poznań in January
Forum posters describe January in Poland, Poznań included, as likely snowy and cold, though posters are direct this isn't guaranteed - one recent year turned out surprisingly mild, with temperatures well above 0C across much of the country. Posters generally describe the range of possible January days as genuinely wide: it could be +10C with heavy rain, -10C with heavy snowfall, sunny, or foggy, all within the same month. Posters consistently recommend checking a reliable Polish weather site closer to travel dates rather than relying on generic seasonal averages, given how variable a specific January in Poznań can turn out. Posters generally recommend preparing for cold, potentially snowy conditions while accepting that the exact experience varies significantly year to year.
Other months in Poznań
Forum posters put July generally around 20-25C and pleasant, though occasional heat waves can push things warmer, and posters flag July as one of Poland's rainier months compared to May or September - with the caveat that many buildings lack air conditioning, so a heat wave can feel worse than the number suggests. For the visit itself, Poznan's Old Market Square with the town hall is called an absolute must, complete with a daily noon show of two mechanical goats butting heads on the tower - and the Old Town is described as lively and safe well into the evening. Visitors timing a trip for late June will just miss the Malta International Theatre Festival, though summer concerts pick up the slack in July.
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Poznań climate normals — January
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Poznań in January
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 7 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Poznań's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherPoznań's weather peaks June–August.
January coincides with Winter smog.
Best weatherFair weatherToughest weather
What's on in Poznań in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Trade fair weeks
1 Jan – 31 DecBook earlyThe fairgrounds sit next to the main station and have done since 1921, so a big fair week fills every central hotel and doubles the rate with no relation to the season. Check the calendar before booking. Source ↗
- Hazard
Winter smog
10 Nov – 5 Mar · usuallySolid-fuel stoves in the older districts and windless, freezing days push the air into the range Poland is known for. Better than Kraków's valley, worse than the coast, and it comes in spells of a few days. Source ↗
Nearby, and something's on
Within 300 km of Poznań — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Poznań?
Poznań in January — FAQ
- Is January a good time to visit Poznań?
- January in Poznań: cold, a little rain, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Poznań on SeasonMap's comfort score (41/100).
- What is the weather like in Poznań in January?
- In January, Poznań averages a daily high of 3.5°C and a low of -2.1°C, with about 49.5 mm of rain over roughly 12.4 rainy days.
- What is the air quality in Poznań in January?
- Poznań has a mean US Air Quality Index of about 35 in January.
- Does it snow in Poznań in January?
- Poznań sees roughly 11.7 cm of snowfall in January.
Within 300 km: Berlin's Christmas markets and Silvester on 23 Nov – 1 Jan, and Warsaw's WOSP charity finale around 24–31 Jan.