Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 697 | 622 | 699 | 667 | 694 | 676 |
Tmin | 696 | 628 | 699 | 669 | 689 | 683 |
Duration of sunshine | 255 | 228 | 221 | 152 | 284 | 262 |
Precipitation | 634 | 577 | 632 | 615 | 636 | 623 |
Humidity/Visibility | 51 | 43 | 51 | 41 | 41 | 50 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 710 | 705 | 698 | 707 | 682 | 712 |
Tmin | 711 | 711 | 698 | 712 | 675 | 719 |
Duration of sunshine | 174 | 273 | 363 | 268 | 276 | 273 |
Precipitation | 669 | 669 | 648 | 666 | 648 | 677 |
Humidity/Visibility | 60 | 60 | 71 | 63 | 50 | 68 |
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. |