Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 794 | 712 | 790 | 783 | 810 | 784 |
Tmin | 769 | 695 | 768 | 777 | 797 | 766 |
Duration of sunshine | 350 | 328 | 297 | 378 | 349 | 367 |
Precipitation | 633 | 570 | 655 | 655 | 680 | 653 |
Humidity/Visibility | 103 | 92 | 96 | 117 | 119 | 116 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 812 | 810 | 776 | 790 | 779 | 815 |
Tmin | 786 | 792 | 765 | 779 | 768 | 800 |
Duration of sunshine | 368 | 316 | 338 | 340 | 316 | 358 |
Precipitation | 684 | 684 | 663 | 676 | 652 | 686 |
Humidity/Visibility | 116 | 116 | 104 | 97 | 109 | 122 |
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. |