Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1246 | 1142 | 1266 | 1220 | 1267 | 1214 |
Tmin | 1243 | 1146 | 1265 | 1226 | 1269 | 1214 |
Duration of sunshine | 155 | 140 | 186 | 180 | 217 | 240 |
Precipitation | 186 | 171 | 188 | 182 | 186 | 180 |
Humidity/Visibility | 183 | 166 | 180 | 174 | 183 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1268 | 1269 | 1252 | 1290 | 1254 | 1295 |
Tmin | 1268 | 1267 | 1252 | 1291 | 1254 | 1298 |
Duration of sunshine | 155 | 124 | 150 | 279 | 180 | 186 |
Precipitation | 186 | 190 | 211 | 215 | 210 | 216 |
Humidity/Visibility | 184 | 183 | 201 | 204 | 205 | 211 |
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. |