Climate averages 1991–2020
Ostrów Wielkopolski weather
in May.
A mild, moderately wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Ostrów Wielkopolski: daytime highs average 18.6°C and nights cool to about 9.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 56 mm of rain on roughly 11 days, which makes May a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 36 min on an average May day.
The nearest other city in this atlas is Kalisz (23 km away). In May its highs average 18.8°C, about as warm as Ostrów Wielkopolski, with 58 mm of rain.
Among the 60 cities listed in Poland, Ostrów Wielkopolski ranks joint 13th of 60 for the warmest May highs and joint 6th of 60 for the driest May (rainfall, lowest first). The mean May high of those 60 cities is 18.1°C; Ostrów Wielkopolski is 0.5°C warmer than that mean.
From May to June, average highs rise by 3.4°C to 22.0°C, and monthly rainfall rises from 56 mm to 68 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ostrów Wielkopolski climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.6°C-3.2°C | -3.2°C | 40 | 10.5 | 8.48 h |
| February | 3.4°C-2.6°C | -2.6°C | 36 | 9.4 | 9.910 h |
| March | 7.7°C-0.2°C | -0.2°C | 46 | 10.8 | 11.812 h |
| April | 13.8°C4.1°C | 4.1°C | 34 | 8.5 | 13.814 h |
| May, selected | 18.6°C9.1°C | 9.1°C | 56 | 11.1 | 15.616 h |
| June | 22.0°C12.8°C | 12.8°C | 68 | 11.6 | 16.617 h |
| July | 24.0°C15.0°C | 15.0°C | 93 | 12.3 | 16.216 h |
| August | 24.0°C14.9°C | 14.9°C | 60 | 10.2 | 14.615 h |
| September | 18.9°C10.9°C | 10.9°C | 51 | 9.5 | 12.713 h |
| October | 13.1°C6.5°C | 6.5°C | 43 | 8.7 | 10.711 h |
| November | 7.2°C2.2°C | 2.2°C | 39 | 8.9 | 8.99 h |
| December | 2.9°C-1.5°C | -1.5°C | 42 | 9.9 | 7.98 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Kalisz in MayPoland · 23 kmHigh 18.8°C · Low 9.1°C · 58 mm rain
- Konin in MayPoland · 70 kmHigh 18.7°C · Low 9.2°C · 56 mm rain
- Wrocław in MayPoland · 82 kmHigh 18.8°C · Low 9.5°C · 61 mm rain
- Gniezno in MayPoland · 99 kmHigh 18.1°C · Low 8.9°C · 54 mm rain
- Poznań in MayPoland · 103 kmHigh 18.5°C · Low 9.3°C · 54 mm rain
- Pabianice in MayPoland · 107 kmHigh 18.3°C · Low 9.0°C · 69 mm rain
- Opole in MayPoland · 110 kmHigh 18.8°C · Low 9.3°C · 69 mm rain
- Lubin in MayPoland · 115 kmHigh 18.8°C · Low 9.3°C · 60 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ostrów Wielkopolski) is explained once on the Ostrów Wielkopolski year overview and on the Sources, method and limits page.