World

Europe

Genova/Sestri





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax123411381261122712601222
Tmin123711401261122312671221
Duration of sunshine000000
Precipitation780702781751779754
Humidity/Visibility167144164173173168


ParameterJulAugSepOctNovDec
Tmax126112501245128412451285
Tmin125712551249128212501281
Duration of sunshine000000
Precipitation775789784818782809
Humidity/Visibility172166196195188187


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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