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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax120411191239119812351200
Tmin120711211239119812361197
Duration of sunshine248254279270310300
Precipitation186168186181186180
Humidity/Visibility184167185178184178


ParameterJulAugSepOctNovDec
Tmax123612381219126012251270
Tmin123812421220126212281270
Duration of sunshine310310300310256310
Precipitation186190212214210218
Humidity/Visibility184185206209206212


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.

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