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Suramérica

Río Parnaíba





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx364328357356367367
Tmín491444489477494488
Duración del tiempo soleado000000
Precipitación9993989998107
Humedad/Visibilidad655964656772


Parámetrojulagosepoctnovdic
Tmáx389396384392370389
Tmín521524507520498523
Duración del tiempo soleado000000
Precipitación130130124123128149
Humedad/Visibilidad858985847981


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.