Dublin enjoys a relatively mild but changeable climate, with extremes of either heat or cold very rare throughout the year.
During the summer months the average high temperatures are in the mid-20s Celsius, although temperatures in the early 30s are not unheard of, particularly in recent years. The chance of sunny weather is highest from May to August.
Winter is fairly mild, with average temperatures of around 5 degrees and a greater chance of rain, particularly in December. Snow is not uncommon in January, although this tends to only last a few days. Such lack of extremes means that Dublin really is a city that can be enjoyed all year round.
Although Ireland has a reputation as a rainy part of the world, Dublin is in fact one of the driest parts of the country with Casement Aerodrome in County Dublin recording the least rainfall of all Irish weather stations. Indeed, as Dubliners are keen to point out, Dublin has on average less rain than London. However, rain in Dublin tends to be 'little and often', so best to bring a brolly. And if you get caught in a downpour, you'll never be far from the nearest pub!