Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1232 | 1147 | 1268 | 1228 | 1268 | 1225 |
Tmin | 1235 | 1146 | 1266 | 1222 | 1266 | 1223 |
Duration of sunshine | 217 | 226 | 248 | 210 | 279 | 240 |
Precipitation | 186 | 168 | 188 | 180 | 186 | 180 |
Humidity/Visibility | 182 | 167 | 184 | 177 | 181 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1268 | 1262 | 1251 | 1292 | 1251 | 1297 |
Tmin | 1268 | 1264 | 1251 | 1287 | 1256 | 1290 |
Duration of sunshine | 248 | 310 | 300 | 248 | 240 | 124 |
Precipitation | 186 | 188 | 211 | 214 | 210 | 217 |
Humidity/Visibility | 184 | 183 | 205 | 206 | 205 | 214 |
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. |