Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 185 | 168 | 183 | 180 | 184 | 180 |
Tmin | 181 | 167 | 182 | 173 | 181 | 175 |
Duration of sunshine | 180 | 165 | 180 | 171 | 174 | 165 |
Precipitation | 186 | 170 | 187 | 183 | 186 | 180 |
Humidity/Visibility | 141 | 128 | 140 | 139 | 146 | 146 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 182 | 187 | 207 | 211 | 209 | 214 |
Tmin | 184 | 184 | 209 | 208 | 203 | 213 |
Duration of sunshine | 178 | 179 | 205 | 204 | 200 | 210 |
Precipitation | 187 | 190 | 209 | 215 | 211 | 219 |
Humidity/Visibility | 149 | 150 | 165 | 167 | 161 | 161 |
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. |