Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1064 | 961 | 1077 | 1044 | 1078 | 1033 |
Tmin | 1071 | 967 | 1070 | 1044 | 1082 | 1045 |
Duration of sunshine | 131 | 117 | 125 | 123 | 136 | 132 |
Precipitation | 155 | 139 | 157 | 151 | 155 | 150 |
Humidity/Visibility | 145 | 132 | 144 | 138 | 139 | 136 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1072 | 1094 | 1066 | 1095 | 1068 | 1069 |
Tmin | 1072 | 1086 | 1063 | 1092 | 1064 | 1077 |
Duration of sunshine | 134 | 149 | 152 | 139 | 97 | 131 |
Precipitation | 159 | 186 | 186 | 184 | 179 | 161 |
Humidity/Visibility | 138 | 150 | 154 | 162 | 147 | 143 |
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. |