Monde

Afrique

Siwa (Oasis)





Number of days available for climatic review

Paramètrejanfevmaravrmaijuin
Tmax10169211041102910701044
Tmin10189221040103910741044
Durée d’insolation93563112015530
Précipitation9387129150156150
Humidité/Visibilité8982112136144145


Paramètrejuilletaoûtsepoctnovdéc
Tmax107310651038105710201067
Tmin107910721042106810341066
Durée d’insolation93124901559093
Précipitation151152154150146156
Humidité/Visibilité145139140137124138


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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