World

North America

Athens (247m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax187216991878181918721817
Tmin187717051881181918781825
Duration of sunshine000000
Precipitation186169187181186180
Humidity/Visibility183165182177182178


ParameterJulAugSepOctNovDec
Tmax187918781838190418511920
Tmin187818771849190118571922
Duration of sunshine000000
Precipitation189190210215210217
Humidity/Visibility181181203207198213


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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Athens

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