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Travel Info

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Ireland Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Ireland year round climate

  • Spring (March–May): Average 6.6–11.6°C, cool and humid climate with occasional showers. Common activities: Coastal walks, visiting castles, enjoying the countryside. Recommended clothing: Light waterproof jacket, sweater, long trousers.
  • Summer (June–August): Average 12.4–14.6°C, mild climate, sunny with less rainfall. Common activities: Hiking, cycling, seaside activities. Recommended clothing: Light breathable clothing, sun protection clothing, rain gear.
  • Autumn (September–November): Average 10.4–8.1°C, cool climate, slightly increased rainfall. Common activities: Autumn sightseeing, visiting museums, enjoying local cuisine. Recommended clothing: Warm jacket, long-sleeved clothing, comfortable trousers.
  • Winter (December–February): Average 3.9–7.1°C, cold and humid climate, occasional rain or snow. Common activities: Indoor activities, visiting art galleries, enjoying warm pubs. Recommended clothing: Warm coat, scarf, hat, gloves, waterproof boots.

Ireland climatological average

Annual average temperature: approx. 9.6°C / Annual rainfall: approx. 33 mm / Summer humidity: 65%–75% / Rainiest month: March

Ireland monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
3.9°C
2.5
February
7.1°C
4.4
March
6.6°C
4.3
April
8.3°C
3.3
May
11.6°C
3.2
June
12.4°C
1.4
July
13.8°C
1.9
August
14.6°C
2.4
September
12.2°C
2.2
October
10.4°C
2.8
November
8.1°C
2.8
December
6.6°C
2.3

Ireland weather for the next seven days

4/1
Wednesday
Patchy rain nearby
11.4°C/2°C
4/2
Thursday
Patchy rain nearby
7.4°C/0.5°C
4/3
Friday
Patchy rain nearby
10.4°C/2.6°C
4/4
Saturday
Patchy rain nearby
12.1°C/2.4°C
4/5
Sunday
Patchy rain nearby
8.4°C/1.4°C
4/6
Monday
Overcast
12.3°C/1.2°C
4/7
Tuesday
Patchy rain nearby
12.2°C/6.1°C

Ireland Frequently Asked Questions and Useful Information for Travel

What is the best month to travel to Ireland?

The best months to travel to Ireland for good weather and fewer crowds are generally May through early June and September. This 'shoulder season' offers a balance of mild, pleasant temperatures, long daylight hours, blooming landscapes, and potentially lower prices, avoiding the peak summer tourist rush and the cold, wet winter months. May and early June are ideal because the country is lush and green with wildflowers, temperatures are pleasantly warm, and the days are long, providing ample time for sightseeing. September offers mild, fall weather, vibrant changing colors in the countryside, and the heather in bloom, along with fewer tourists than summer. July and August are the busiest and most expensive times to visit, with the warmest temperatures, but also the highest crowds. November through February is the low season, with cold, wet weather, short days, and potentially closed attractions.

What I wish I knew before going to Ireland?

Before visiting Ireland, expect variable weather requiring layered clothing, be prepared for driving on the left side of the road, and understand that English is the primary language, though Irish Gaelic is also an official language. Embrace the warm hospitality and be ready to participate in the 'rounds system' for drinks in pubs. Plan a longer trip to see beyond Dublin, and book accommodations and rental cars in advance, especially during peak season. The 'Emerald Isle' gets plenty of rain, so pack a waterproof jacket and umbrella. Ireland's weather can change quickly, so packing layers is essential for comfort. Driving is on the left side of the road, so be aware of this if you plan to rent a car.

What not to do in Ireland as a tourist?

To avoid being an embarrassing tourist in Ireland, don't drink and drive. Ireland has strict laws and high penalties for driving under the influence. Don't be loud or disruptive; be mindful of your volume in public places. Don't compare Ireland to other countries; avoid phrases like 'It's not as good as [another country]'. Be sure to pay your round at the pub. You should also not assume tipping is necessary, don't rush your trip by trying to see too much, and never refer to Ireland as part of the UK. Finally, don't forget to dress for unpredictable weather, and don't only rely on tourist guidebooks for planning your itinerary.

Is Ireland friendly to US citizens?

Yes, Ireland is generally considered a very friendly country for U.S. citizens, offering an open and welcoming society, a shared language, and a vibrant tourism industry that sees many American visitors. U.S. citizens generally find the Irish population easy to get along with, making the country an appealing destination for both tourism and for those looking to live or study there. Ireland is known for its friendly and open society, where foreigners are generally welcomed by the population. With English being the primary language, communication is easy for American visitors and residents. The large number of American tourists visiting Ireland indicates a positive and welcoming reception to visitors from the U.S. The shared language and friendly locals make it relatively easy for Americans to settle in and start a new life in Ireland.

What are the must-try foods in Ireland?

When visiting Ireland, you must try traditional Irish stew, a hearty dish made with lamb or mutton, potatoes, and root vegetables. Another classic is boxty, a potato pancake that can be served savory or sweet. Don't miss out on a full Irish breakfast, typically including bacon, eggs, sausage, black and white pudding, and baked beans. For seafood lovers, fresh oysters and salmon are highly recommended. And of course, no trip to Ireland is complete without sampling some Irish whiskey and a pint of Guinness.