 Precipitation falls throughout the year but is light overall , particularly in the east . The west tends to be wetter on average and prone to Atlantic storms , especially in the late autumn and winter months . These occasionally bring destructive winds and higher total rainfall to these areas , as well as sometimes snow and hail . The regions of north County Galway and east County Mayo have the highest incidents of recorded lightning annually for the island , with lightning occurring approximately five to ten days per year in these areas . Munster , in the south , records the least snow whereas Ulster , in the north , records the most . 
