The bar chart below shows the average monthly peak daytime temperatures at Ostrów Wielkopolski
		
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | -0.1 | 1.7 | 7 | 13.7 | 18.8 | 22.1 | 23.6 | 23.2 | 19.1 | 13.7 | 6.8 | 1.5 | 
| °F | 31.8 | 35.1 | 44.5 | 56.7 | 65.8 | 71.8 | 74.5 | 73.8 | 66.3 | 56.7 | 44.2 | 34.7 | 
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
		
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 27 | 24 | 26 | 35 | 54 | 64 | 75 | 68 | 46 | 36 | 39 | 35 | 
| inches | 1.1 | 1 | 1 | 1.4 | 2.1 | 2.5 | 3 | 2.7 | 1.8 | 1.4 | 1.5 | 1.4 | 
| Rainy days | 15 | 13 | 13 | 13 | 12 | 14 | 14 | 13 | 12 | 13 | 16 | 17 | 
Average annual rainfall in Ostrów Wielkopolski: 597.433mm (235.2 inches)
The bar chart below shows the average daily sunshine hours in Ostrów Wielkopolski
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 1.7 | 2.5 | 3.8 | 5.3 | 7.3 | 7.5 | 7.4 | 7.1 | 5.1 | 3.8 | 1.8 | 1.4 | 
The graph below shows the daily range of temperatures for each month.
		
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | -5.8 | -4.7 | -1 | 3.7 | 7.8 | 11.4 | 12.8 | 12.3 | 9.3 | 5.3 | 1.1 | -3.6 | 
| Max °C | 0 | 1.9 | 7.2 | 14 | 19.1 | 22.4 | 23.9 | 23.5 | 19.3 | 13.9 | 6.9 | 1.6 | 
| Min °F | 21.6 | 23.6 | 30.3 | 38.6 | 46 | 52.5 | 55 | 54.1 | 48.7 | 41.5 | 34 | 25.5 | 
| Max °F | 26.8 | 29.5 | 37.6 | 47.8 | 56.1 | 62.4 | 64.9 | 64.2 | 57.7 | 49.3 | 39.2 | 30.2 | 
The graph below shows the average sea temperature.
		
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 6.8 | 5.7 | 5.8 | 7.3 | 10.9 | 15.6 | 19.1 | 20.2 | 17.9 | 14.5 | 11.1 | 8.5 | 
| °F | 44.2 | 42.3 | 42.4 | 45.1 | 51.7 | 60.1 | 66.3 | 68.4 | 64.2 | 58.1 | 52 | 47.3 | 
The graph below shows the average wind speed.
		
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 14 | 13 | 14 | 13 | 11 | 10 | 10 | 9 | 10 | 12 | 14 | 14 | 
| mph | 9 | 8 | 9 | 8 | 7 | 6 | 6 | 6 | 6 | 7 | 9 | 9 | 
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
		| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| 91% | 87% | 79% | 72% | 72% | 73% | 73% | 74% | 79% | 83% | 88% | 91% | 
| Hottest month: | July | 23.6°C 74.5°F | 
|---|---|---|
| Driest month: | February | 24mm 0.9ins | 
| Sunniest month: | August | 7.1hrs | 
| Coldest month: | January | -0.1°C 31.8°F | 
| Wettest month: | July | 75mm 3ins | 
| Warmest sea: | August | 20.2°C 68.4°F |