Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 671 | 600 | 686 | 649 | 674 | 662 |
Tmin | 681 | 609 | 691 | 664 | 680 | 669 |
Duration of sunshine | 236 | 239 | 211 | 178 | 273 | 275 |
Precipitation | 555 | 513 | 547 | 531 | 551 | 560 |
Humidity/Visibility | 59 | 53 | 69 | 53 | 54 | 61 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 688 | 685 | 667 | 677 | 662 | 690 |
Tmin | 701 | 699 | 677 | 695 | 679 | 704 |
Duration of sunshine | 227 | 292 | 313 | 252 | 218 | 323 |
Precipitation | 596 | 595 | 577 | 595 | 568 | 150 |
Humidity/Visibility | 72 | 74 | 75 | 65 | 67 | 80 |
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. |