Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 109 | 100 | 117 | 135 | 136 | 130 |
Tmin | 95 | 83 | 92 | 110 | 123 | 122 |
Duration of sunshine | 155 | 140 | 248 | 210 | 248 | 210 |
Precipitation | 138 | 120 | 150 | 175 | 166 | 160 |
Humidity/Visibility | 111 | 97 | 110 | 130 | 140 | 136 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 139 | 134 | 127 | 133 | 111 | 117 |
Tmin | 119 | 105 | 111 | 123 | 101 | 120 |
Duration of sunshine | 217 | 248 | 210 | 248 | 210 | 248 |
Precipitation | 167 | 164 | 162 | 157 | 136 | 134 |
Humidity/Visibility | 137 | 128 | 129 | 136 | 107 | 119 |
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. |