Ireland has a temperate climate and is cold and damp much of the
year. Summer (May to September) is the warmest and driest season
and is the best time to visit, though attractions can get crowded
in July and August. Winter is characterised by short, wet, foggy
days and long night, but the temperature rarely gets below freezing
due to the tempering Gulf Stream winds that buffet the west coast
of Ireland. Some attractions are only open in summer.