Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 741 | 681 | 737 | 737 | 756 | 730 |
Tmin | 738 | 675 | 739 | 737 | 755 | 730 |
Duration of sunshine | 155 | 113 | 155 | 60 | 155 | 30 |
Precipitation | 702 | 624 | 687 | 708 | 713 | 691 |
Humidity/Visibility | 86 | 91 | 86 | 103 | 99 | 99 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 759 | 752 | 720 | 733 | 712 | 761 |
Tmin | 759 | 750 | 721 | 727 | 711 | 751 |
Duration of sunshine | 155 | 62 | 210 | 62 | 90 | 186 |
Precipitation | 708 | 717 | 686 | 718 | 709 | 216 |
Humidity/Visibility | 101 | 95 | 88 | 81 | 81 | 101 |
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. |