Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1408 | 1279 | 1412 | 1373 | 1394 | 1366 |
Tmin | 1423 | 1285 | 1418 | 1376 | 1400 | 1368 |
Duration of sunshine | 62 | 57 | 62 | 60 | 124 | 150 |
Precipitation | 187 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 166 | 184 | 177 | 181 | 176 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1403 | 1404 | 1396 | 1440 | 1400 | 1429 |
Tmin | 1418 | 1412 | 1404 | 1448 | 1402 | 1436 |
Duration of sunshine | 155 | 124 | 90 | 93 | 60 | 62 |
Precipitation | 187 | 190 | 210 | 215 | 210 | 217 |
Humidity/Visibility | 181 | 182 | 204 | 208 | 204 | 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. |