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Europe

Porto Santo





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax741670742717735718
Tmin741669740719743718
Duration of sunshine181163182176183173
Precipitation186169189181186180
Humidity/Visibility185166184179184178


ParameterJulAugSepOctNovDec
Tmax737740726765746771
Tmin743744732765745771
Duration of sunshine182184189207203212
Precipitation186194204215210217
Humidity/Visibility184184190208207213


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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