Ristna





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx552506533518528516
Tmín551521551534540530
Duración del tiempo soleado000000
Precipitación155138150150149142
Humedad/Visibilidad140126143132135134


Parámetrojulagosepoctnovdic
Tmáx538560539562550568
Tmín540564548570560566
Duración del tiempo soleado000000
Precipitación156187179176151157
Humedad/Visibilidad132158164157136142


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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