Welt

Europa

Bristol





Number of days available for climatic review

ParameterJanFebMärAprMaiJun
Tmax3028312680
Tmin3127313090
Sonnenscheindauer000000
Niederschlag3128313090
Feuchte/Sicht415250440113474152514641134741526887211347


ParameterJulAugSepOktNovDez
Tmax000122628
Tmin000142830
Sonnenscheindauer000000
Niederschlag000143233
Feuchte/Sicht415269896113474152709201134741527194411347


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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