Lisboa (105m)





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx184165181175184179
Tmín185167184179186176
Duración del tiempo soleado184158176179184175
Precipitación186169189181186180
Humedad/Visibilidad184168184178184178


Parámetrojulagosepoctnovdic
Tmáx183185205209207218
Tmín185187207211207217
Duración del tiempo soleado183185207207202213
Precipitación186190212215210217
Humedad/Visibilidad184186206210207216


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.