Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 529 | 490 | 555 | 556 | 569 | 549 |
Tmin | 531 | 483 | 551 | 557 | 567 | 547 |
Duration of sunshine | 279 | 198 | 279 | 240 | 248 | 210 |
Precipitation | 124 | 122 | 130 | 164 | 167 | 152 |
Humidity/Visibility | 120 | 108 | 121 | 141 | 148 | 133 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 580 | 555 | 519 | 545 | 501 | 504 |
Tmin | 579 | 554 | 519 | 540 | 500 | 504 |
Duration of sunshine | 279 | 217 | 240 | 279 | 270 | 248 |
Precipitation | 161 | 161 | 152 | 161 | 154 | 163 |
Humidity/Visibility | 148 | 149 | 145 | 143 | 141 | 146 |
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. |