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Norteamérica

London Aeropuerto (278m)





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx123110122119121140
Tmín126113124120124139
Duración del tiempo soleado000000
Precipitación184168184178186182
Humedad/Visibilidad140125137132137148


Parámetrojulagosepoctnovdic
Tmáx151152146148147150
Tmín152150169163145155
Duración del tiempo soleado000000
Precipitación185190209213211226
Humedad/Visibilidad160159165158154161


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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London

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