Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 726 | 654 | 703 | 723 | 757 | 729 |
Tmin | 719 | 642 | 689 | 715 | 758 | 720 |
Duration of sunshine | 186 | 169 | 248 | 150 | 186 | 180 |
Precipitation | 125 | 109 | 120 | 141 | 148 | 163 |
Humidity/Visibility | 82 | 71 | 71 | 100 | 111 | 107 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 750 | 720 | 676 | 703 | 675 | 705 |
Tmin | 739 | 719 | 671 | 703 | 665 | 689 |
Duration of sunshine | 217 | 186 | 210 | 248 | 180 | 155 |
Precipitation | 169 | 162 | 151 | 144 | 178 | 185 |
Humidity/Visibility | 108 | 108 | 106 | 112 | 95 | 110 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |