| Month | Highest mean temperature (˚C) | Observed year | Coefficient of determination (%) |
| April | 9.4 | 2010 | 88.5 |
| May | 14.7 | 2007 | 60.85 |
| June | 21.5 | 2007 | 47.75 |
| July | 25.6 | 2007 | 42.73 |
| August | 23.7 | 2010 | 58.75 |
| September | 19.3 | 2009 | 92.33 |