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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax398362397385401385
Tmin399358398388400387
Duration of sunshine000000
Precipitation70648483125110
Humidity/Visibility575450415975


ParameterJulAugSepOctNovDec
Tmax400389376400380397
Tmin402392378397386395
Duration of sunshine000000
Precipitation99111104103138124
Humidity/Visibility544475828281


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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