Mondo

Europa

Isola di Portland





Number of days available for climatic review

ParametroGenFebMarAprMagGiu
Tmax3028302580
Tmin3127312990
Durata del soleggiamento000000
Precipitazione3136333290
Umidità/Visibilità-1888073920852978030-1971317824000


ParametroLugAgoSetOttNovDic
Tmax000102525
Tmin000142626
Durata del soleggiamento000000
Precipitazione000143240
Umidità/Visibilità00-21285741600-19715458280


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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Isola di Portland

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