Monde

Afrique

Illizi/Illirane (Aéroport) (544m)





Number of days available for climatic review

Paramètrejanfevmaravrmaijuin
Tmax110102116125136129
Tmin11098112119130135
Durée d’insolation000000
Précipitation134120150173173158
Humidité/Visibilité114103114126140140


Paramètrejuilletaoûtsepoctnovdéc
Tmax139132132141135143
Tmin140130131141135146
Durée d’insolation000000
Précipitation166163163161158163
Humidité/Visibilité144133134143134145


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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