Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1659 | 1502 | 1661 | 1612 | 1666 | 1611 |
Tmin | 1670 | 1505 | 1668 | 1616 | 1672 | 1612 |
Duration of sunshine | 217 | 225 | 248 | 270 | 310 | 300 |
Precipitation | 188 | 172 | 190 | 188 | 193 | 182 |
Humidity/Visibility | 141 | 127 | 140 | 136 | 136 | 131 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1659 | 1659 | 1645 | 1683 | 1609 | 1667 |
Tmin | 1664 | 1661 | 1644 | 1682 | 1616 | 1668 |
Duration of sunshine | 310 | 310 | 300 | 310 | 270 | 279 |
Precipitation | 190 | 204 | 212 | 214 | 188 | 202 |
Humidity/Visibility | 135 | 137 | 159 | 151 | 136 | 141 |
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. |