Poznań weather in May
May in Poznań: nice, a little rain, with clean air — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#5 of 12 months in Poznań · #613 of 1413 destinations to visit in May · comfort 83/100 (tier A)
- Days
- 20°C
- Nights
- 8°C
- Wet days
- 10
- Sun
- 11.2 h
- Humidity
- 66%
- Daylight
- 16 h

Traveller notes on Poznań in May
Other months in Poznań
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.
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 — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Poznań in May
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.
BusyMajówka, the May long weekend, school holidays in 4 of the markets that fill it(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).
Fair weatherPoznań's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Poznań in May
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 ↗
- Holiday
Majówka, the May long weekend
29 Apr – 5 May · usuallyNational holidayCrowdedClosuresBook early1 May and 3 May are public holidays, and many Poles take the days between to make a week-long break. Shops close on both holidays, trains and coaches fill, and hotels in the mountains, on the coast and in the most visited cities book up early. 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 May — FAQ
- Is May a good time to visit Poznań?
- May in Poznań: nice, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Poznań on SeasonMap's comfort score (83/100).
- What is the weather like in Poznań in May?
- In May, Poznań averages a daily high of 20.3°C and a low of 7.6°C, with about 52.7 mm of rain over roughly 9.5 rainy days.
- What is the air quality in Poznań in May?
- Poznań has a mean US Air Quality Index of about 48 in May.
Within 300 km: Berlin's Karneval der Kulturen on 22–25 May, and Warsaw's Vistula riverside season around 1 May – 20 Sep.