Winter in northern Italy can be can very cold, especially in January, and summers very hot, especially in July and August. By August so many businesses in Bologna are closed it seems the whole city has gone to the beach.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | -1 - 5 | 43 | 3 | |
| Feb | 0 - 8 | 45 | 3 | |
| Mar | 3 - 14 | 60 | 5 | |
| Apr | 7 - 20 | 67 | 6 | |
| May | 12 - 23 | 65 | 7 | |
| Jun | 15 - 27 | 53 | 9 | |
| Jul | 17 - 30 | 43 | 9 | |
| Aug | 17 - 30 | 58 | 8 | |
| Sep | 15 - 26 | 61 | 7 | |
| Oct | 10 - 18 | 72 | 5 | |
| Nov | 5 - 11 | 81 | 3 | |
| Dec | 0 - 6 | 61 | 2 |