Belfast/Harbour





Number of days available for climatic review

parametrstylutmarkwimajcze
Tmax215196216223248240
Tmin186178204218237224
słońce (godz.)000000
opad249224248257279270
wilgotność / widzialność413843526562


parametrlipsiewrzpaźlisgru
Tmax241237239240239242
Tmin226228230227203217
słońce (godz.)000000
opad281279274279302294
wilgotność / widzialność605763605957


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.