Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 181 | 164 | 183 | 176 | 185 | 176 |
Tmin | 183 | 166 | 186 | 177 | 185 | 176 |
Duration of sunshine | 206 | 221 | 309 | 292 | 304 | 295 |
Precipitation | 188 | 179 | 190 | 183 | 186 | 180 |
Humidity/Visibility | 168 | 148 | 161 | 151 | 162 | 157 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 181 | 181 | 202 | 209 | 204 | 203 |
Tmin | 180 | 183 | 204 | 209 | 205 | 214 |
Duration of sunshine | 303 | 304 | 294 | 297 | 320 | 294 |
Precipitation | 185 | 190 | 216 | 217 | 214 | 231 |
Humidity/Visibility | 168 | 170 | 191 | 193 | 191 | 189 |
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. |