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Why you should visit Ireland in September

Icon September 23, 2025
Icon 4 min read
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When planning a trip to Ireland, many people immediately think of summer as the best time to go. And yes, Ireland is great in the summer, and of course, that’s the time where you’ll get the longest days and (if you’re lucky) the most sunny days. However, there are other months that are certainly worth a trip to Ireland and, in some points, even better—like September. Fewer crowds, mild temperatures, and a mix of late summer air and the first touches of autumn color make it the perfect time to visit. You need more reasons? Ok, here’s a blog on why you should definitely visit Ireland in September.

Mild weather makes exploring comfortable


Ireland’s weather is unpredictable—all year round. You might get rain, fog, and sun all in a day, and yes, also in summer. September often brings a surprisingly pleasant balance to the chaos. Average daytime temperatures range between 13°C and 17°C (55°F to 63°F). And while you should still be prepared for a bit of rain—it is still Ireland, after all—the showers also tend to be lighter and less frequent than later in autumn and winter.

The mild weather makes September an ideal month for your outdoor adventures. Explore the Cliffs of Moher, wander through the Wicklow Mountains, or take in the scenery of the fjords and hills in Connemara. This late summer month gives you the chance to see Ireland’s landscapes at their best—without the heat and the peak-season crowds.

Source: Gina Dolenc on Unsplash

Fewer crowds, better value and a more authentic experience


Another great advantage of visiting Ireland in September is the calmer atmosphere compared to the summer months. Summer holidays are over, and the tourist hotspots are quieter than before, resulting in a better and more relaxed visit: Especially the most iconic sites, like Giant’s Causeway or the Cliffs of Moher, can get quite busy in the peak season. A more relaxed visit also means that you might get more opportunities to connect with locals when you’re shopping in small villages or enjoying a pint and live music at a pub. 

Of course, travelling outside of the holidays also means that prices are a bit lower than in July or August. Flights and accommodation are usually more affordable, and often, you’ll also get excellent deals on tours and car rentals. With fewer visitors around, it’s also easier to book popular restaurants or snag a good spot on guided tours to popular sites.


Source: Rhys Kentish on Unsplash

You need more reasons to visit Ireland in September?


Great weather conditions, great vibes, and great value are not enough reasons for you? Alright, here’s more:

  • September is a dream for nature and photography lovers: the countryside is still lush and green from the summer, but hints of gold and amber begin to appear in the trees. That, as well as softer light and dramatic skies, make this month a great time for stunning views and photos.
  • September in Ireland also means festival season: The Dublin Fringe Festival offers everything from theatre and comedy to dance and visual art. And other music or harvest festivals pop up all around Ireland.
  • October is just around the corner, meaning that you’ll get a glimpse of the starting Halloween vibes in the country. In October, the Irish celebrate Halloween with traditional events and, of course, also parties all over the country.

If you consider visiting Ireland, September offers the best of both worlds—plenty of atmosphere and activities, but also great value and more breathing space. It’s a great time for travellers wanting to make the most of their time in Ireland without breaking the bank.

Source header image: P Mantha on Unsplash

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