| Month | Highest maximum temperature (˚C) | Observed year | Coefficient of determination (%) |
| April | 16.4 | 2010 | 95.15 |
| May | 19.7 | 2007 | 66.62 |
| June | 24.7 | 2007 | 45.59 |
| July | 28.2 | 2007 | 76.19 |
| August | 27.8 | 2010 | 71.55 |
| September | 24.6 | 2009 | 81.59 |