When to Visit Ireland
Climate guide & best times to travel
Best Time to Visit
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Year-Round Essentials
Spring (Mar-May)
Summer (Jun-Aug)
Autumn (Sep-Nov)
Winter (Dec-Feb)
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Month-by-Month Guide
January
January is the heart of Irish winter—cool, grey, and damp with short days that can feel a bit gloomy. The temperature hovers around 3-8°C, and while snow is rare, you'll likely encounter persistent drizzle and strong Atlantic winds. That said, it's quiet, the pubs are warm, and accommodation is at its cheapest.
February
February is marginally warmer than January but still firmly in winter mode, with temperatures ranging from 3-9°C. Days are starting to lengthen noticeably, which lifts the mood a bit, though you'll still get plenty of overcast skies and that persistent Irish drizzle. It's one of the quietest months for tourism.
March
March brings the first hints of spring, with temperatures climbing to 4-10°C and noticeably longer days. St. Patrick's Day (March 17th) transforms the country into one big celebration, particularly in Dublin, so expect crowds around that time. The weather remains unpredictable—you might get lovely sunny spells or sideways rain, often on the same day.
April
April is a lovely shoulder month with temperatures reaching 5-12°C and spring in full bloom across the countryside. The landscape turns brilliantly green, and you'll see lambs in the fields and wildflowers starting to appear. Weather is still changeable, but you're getting more sunny intervals between the showers.
May
May is genuinely one of the best months to visit Ireland, with temperatures warming to 8-16°C and long, bright evenings that stretch until nearly 10pm. The countryside is at its greenest, tourist crowds haven't peaked yet, and you'll catch hawthorn hedges in full bloom. That said, you'll still want waterproofs handy.
June
June marks the start of summer with temperatures reaching 11-18°C and the longest days of the year—sunset can be as late as 10pm in parts of the country. Tourist season is ramping up, particularly around popular sites like the Cliffs of Moher and Ring of Kerry. The weather tends to be more settled, though "settled" is relative in Ireland.
July
July is peak summer and peak tourist season, with temperatures reaching their annual high of around 12-19°C. Schools are out across Europe, so popular attractions get crowded and accommodation prices rise. The weather is about as good as it gets in Ireland, though you should still expect the occasional rainy day and pack accordingly.
August
August maintains July's temperatures (12-19°C) and continues the peak tourist season, with festivals happening across the country. Days are still long, though you'll notice them shortening as the month progresses. Interestingly, August can sometimes be wetter than July, so those waterproofs remain essential.
September
September is an excellent shoulder month with temperatures still mild at 10-17°C and tourist crowds thinning considerably after schools resume. The countryside takes on beautiful autumn colours, and you'll often get surprisingly pleasant weather—locals call it "an Indian summer" when conditions are particularly good. It's a sweet spot for visiting.
October
October brings proper autumn weather with temperatures cooling to 8-13°C and days noticeably shorter. The landscape is gorgeous with autumn foliage, and Halloween (which has Irish roots) is celebrated enthusiastically. Weather becomes more unsettled with stronger winds off the Atlantic, but it's still perfectly pleasant for exploring.
November
November slides into winter with temperatures dropping to 5-10°C and short, often grey days. Tourist numbers are low, which means great deals on accommodation but also some attractions operating on reduced hours or closing entirely. The weather is typically damp and dreary, though you'll find cozy pubs and fewer crowds at major sites.
December
December brings Christmas markets and festive atmosphere to Irish cities, with temperatures hovering around 4-9°C. Days are at their shortest, and the weather is typically cold, damp, and windy. Snow is rare but possible, particularly in higher elevations. The period between Christmas and New Year sees increased crowds as locals travel domestically.