Best time to visit Poznań

Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.

Saved to this browser. Changes update the strips below.
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Day · avg daily high (?)
Night · avg overnight low (?)
UV index · On a typical day around midday, UV is about this (?)
1234555321
On the sunniest 1 in 10 days, UV reaches this — and even higher
5776
PM2.5 air quality · on a typical day (?)
242524131097811152326
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
434242211413101319243949
September 9/10 feels 20°C (+3°C vs 1991-2020) · HCI 90/100
Day 21° · Night 12° 59% humidity 17 km/h wind 7 rain days (79h) 210h sun
Thermal 9
Sky 10
Rain 8
Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.

Compare with another destination

Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.

Similar climatesToruń97% · Berlin97% · Warsaw97%

Other destinations with the most-alike year-round climate to Poznań (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Poznań's. Based on the 2020-2024 climatology, not this year's actual weather.

Month-by-month

Month Temp °C Feels °C Rain days Rain h Rain h/day Humidity Wind km/h Sun h UV Interest Score
Jan -1–4 0 14 161 11.5 83% 21 68 — Quiet 3
Feb 0–6 2 14 174 12.4 76% 23 94 1 Quiet 3
Mar 1–10 6 9 110 12.2 63% 19 177 2 Quiet 6
Apr 4–13 10 10 118 11.8 56% 20 201 3 Quiet 6
May 9–19 16 10 99 9.9 53% 19 267 4 Quiet 8
Jun 14–24 23 12 97 8.1 52% 17 283 5 Quiet 9
Jul 15–25 24 11 96 8.7 49% 19 292 5 Quiet 9
Aug 16–25 25 13 127 9.8 54% 17 245 5 Peak 8
Sep 12–21 20 7 79 11.3 59% 17 210 3 Peak 9
Oct 8–15 13 10 106 10.6 73% 19 143 2 Moderate 6
Nov 3–8 5 8 106 13.3 83% 18 78 1 Busy 4
Dec 0–4 0 10 134 13.4 85% 19 56 — Quiet 3

UV Index in Poznań by Month

UV index in Poznań peaks at 5 (moderate) in June, dropping to 0 (low) in January.

Best months in detail

September

9/10

12–21°C (feels 20°C) · 7 rain days (79h) · 210 sun hours · 59% humidity · Peak crowd · UV 3 (moderate)

July

9/10

15–25°C (feels 24°C) · 11 rain days (96h) · 292 sun hours · 49% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

June

9/10

14–24°C · 12 rain days (97h) · 283 sun hours · 52% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

Every month

Show the other 9 months in detail

January

3/10

-1–4°C (feels 0°C) · 14 rain days (161h) · 68 sun hours · 83% humidity · Quiet crowd

February

3/10

0–6°C (feels 2°C) · 14 rain days (174h) · 94 sun hours · 76% humidity · Quiet crowd · UV 1 (low)

March

6/10

1–10°C (feels 6°C) · 9 rain days (110h) · 177 sun hours · 63% humidity · Quiet crowd · UV 2 (low)

April

6/10

4–13°C (feels 10°C) · 10 rain days (118h) · 201 sun hours · 56% humidity · Quiet crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)

May

8/10

9–19°C (feels 16°C) · 10 rain days (99h) · 267 sun hours · 53% humidity · Quiet crowd · UV 4 (moderate)

August

8/10

16–25°C · 13 rain days (127h) · 245 sun hours · 54% humidity · Peak crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)

October

6/10

8–15°C (feels 13°C) · 10 rain days (106h) · 143 sun hours · 73% humidity · Moderate crowd · UV 2 (low)

November

4/10

3–8°C (feels 5°C) · 8 rain days (106h) · 78 sun hours · 83% humidity · Busy crowd · UV 1 (low)

December

3/10

0–4°C (feels 0°C) · 10 rain days (134h) · 56 sun hours · 85% humidity · Quiet crowd

Frequently asked questions about visiting Poznań

When is the best time to visit Poznań?

September is the highest-scoring month (9/10 on the Holiday Climate Index). Typical conditions: 12–21°C (7 rainy days). The top three months by score are September, July, June.

What is the worst time to visit Poznań?

January is the lowest-scoring month (3/10). Typical conditions: -1–4°C (14 rainy days).

When are crowds lowest in Poznań?

Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in August. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Which months in Poznań have good weather but fewer tourists?

June (climate 9/10, crowd index 12) and July (climate 9/10, crowd index 36) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Poznań by month?

UV peaks at 5 (moderate) in June and is lowest in January at 0 (low). Monthly peak values: Jan —, Feb 1, Mar 2, Apr 3, May 4, Jun 5, Jul 5, Aug 5, Sep 3, Oct 2, Nov 1, Dec —.

What is the UV index in Poznań in June?

June is the peak UV month in Poznań, with a daily-peak UV index of 5 (moderate). Standard sun protection — sunglasses and light SPF — is recommended.

How high can UV get in Poznań on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 5 (moderate), but the top 10% of days reach UV 7 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: April, June, July, August. Plan sun protection for the worst case, not the average.

Is air quality in Poznań bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 8 months: January, February, March, April, September, October, November, December. The worst month is December with a typical-day mean of 26 µg/m³ (unhealthy); on the worst 10% of days PM2.5 reaches 49 µg/m³ (hazardous) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.