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France

Tours/St Symphorien (112m)





Number of days available for climatic review

Paramètrejanfevmaravrmaijuin
Tmax111510071116107911151080
Tmin111510071116107911151079
Durée d’insolation186166184178185179
Précipitation186169186181186180
Humidité/Visibilité185168185179185179


Paramètrejuilletaoûtsepoctnovdéc
Tmax110911151107113911061147
Tmin111111181108114111081147
Durée d’insolation180188207207206217
Précipitation184190210215209219
Humidité/Visibilité180185207209206215


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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