June, July and August are probably the best months to visit Ireland, as the weather is relatively warm, if not entirely dry. It is also the liveliest time of year with scores of music, dance, comedy and literary festivals and thousands of tourists.
A visit during September or October might be a better option if you want to avoid the majority of tourists while still enjoying reasonably mild weather. Around this time, the All-Ireland Hurling and Football finals in Croke Park supplement a number of the more interesting end-of-season festivals, including the prestigious Dublin Theatre Festival. Although the weather is distinctly cooler in the winter months, visitors who enjoy a more sedate holiday may find it a better time to visit. Those who choose to visit in winter will find less tourists, shorter queues for major attractions, pubs and restaurants and friendlier locals.
Come prepared for every eventuality. It's not unusual to experience sunshine, warmth, cold and rain all in one day, at any time of year. Although it rains frequently, Dublin is one of the driest parts of Ireland with annual rainfall lower than that of many American cities. When the sun shines, the city looks splendid. When it rains, however, it's important to have a waterproof jacket or umbrella. Warm sweaters or fleeces are also essential in winter.
Although temperatures don't often rise above 20° Celsius, the most practical attire in summertime, if the weather is warm, is T-shirts and shorts or lightweight slacks. A light jacket or cardigan is also advised as the evenings can turn cold.
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