Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 616 | 559 | 618 | 611 | 646 | 624 |
Tmin | 561 | 505 | 559 | 541 | 558 | 542 |
Duration of sunshine | 248 | 198 | 186 | 240 | 248 | 240 |
Precipitation | 62 | 57 | 64 | 79 | 93 | 90 |
Humidity/Visibility | 60 | 55 | 60 | 73 | 90 | 87 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 648 | 618 | 595 | 616 | 595 | 614 |
Tmin | 558 | 560 | 541 | 559 | 540 | 561 |
Duration of sunshine | 248 | 279 | 270 | 248 | 300 | 279 |
Precipitation | 101 | 98 | 90 | 93 | 92 | 99 |
Humidity/Visibility | 89 | 88 | 86 | 83 | 86 | 87 |
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. |