Ireland has a temperate maritime climate. The climate is modified by the relatively warm North Atlantic Current which keeps Irish winters mild (with only few days of the year below freezing point).
The weather is very changeable and unpredictable. Be prepared for plenty of rain, but also expect some warm spells during the summer months.
Temperatures do not vary much throughout the country, but rainfall is substantially heavier in the west (see map). The driest part of the country is on the east around Dublin city.
For up to date weather information, please visit Met Éireann, the Irish meteorological service.