| Month | Highest mean solar radiation (Lys) | Observed year | Coefficient of determination (%) |
| April | 454.67 | 2007 | 75.87 |
| May | 507 | 2008 | 83.54 |
| June | 526.67 | 2008 | 53.8 |
| July | 583 | 2007 | 39.08 |
| August | 485.67 | 2007 | 86.96 |
| September | 377.33 | 2009 | 83.1 |