Dublin in August

When to go

Met Éireann's Dublin Airport averages in the facts give August's typical highs, lows and rainfall, so check them when you plan what to pack. The first Monday of August is an Irish public holiday, and Visit Dublin's festivals guide lists The Big Grill in Herbert Park and the Dalkey Lobster Festival under August, so compare your dates with both and check its full events list for the latest information.

Trip facts

• Met Éireann's Dublin Airport 1991–2020 averages list a mean daily max of 19.1 and a mean daily min of 11.2 degrees Celsius for August. (www.met.ie, checked 2026-10-15)
• Met Éireann's Dublin Airport 1991–2020 averages list a mean monthly rainfall total of 73.4 mm for August and a mean of 11.8 days with 1.0 mm or more. (www.met.ie, checked 2026-10-15)
• Citizens Information lists the first Monday in August among Ireland's public holidays (sometimes called bank holidays), shows it falling on 2 August in 2027, and says other services such as public transport still operate on public holidays but often have restricted schedules. (www.citizensinformation.ie, checked 2026-10-15)
• Visit Dublin's festivals guide lists The Big Grill in Herbert Park, which it describes as mid-August's festival, and the Dalkey Lobster Festival under August, and points to its full list of festivals and events for the most up-to-date information. (www.visitdublin.com, checked 2026-10-15)
• Citizens Information, the Citizens Information Board's public information site, says you do not need a visa to land in Ireland if you are a citizen of a country in its table, and the table lists the United States of America. (www.citizensinformation.ie, checked 2026-10-15)
• Ireland's Immigration Service Delivery says that, as Ireland is not participating in the EU Entry/Exit System (EES), travellers coming directly to Ireland are not bound by the scheme's requirements. (www.irishimmigration.ie, checked 2026-10-15)
• U.S. Customs and Border Protection lists Dublin and Shannon in Ireland among its Preclearance locations and says that with Preclearance, travelers bypass CBP and TSA inspections upon U.S. arrival and proceed directly to their connecting flight or destination. (www.cbp.gov, checked 2026-10-15)
• Fáilte Ireland's Discover Ireland site points visitors to Transport for Ireland, the National Transport Authority's one-stop-shop for travelling information, where you can access door-to-door journey plans, real-time bus and Luas timetables, or even top up your Leap card. (www.discoverireland.ie, checked 2026-10-15)
• Visit Dublin's guide for first-time visitors lists 'Three months before' as the time to book hotel accommodation, especially in summer. (www.visitdublin.com, checked 2026-10-15)
• Visit Dublin's guide for first-time visitors says Dublin is a fairly compact city, and easy to navigate on foot, and that you definitely don't need a car. (www.visitdublin.com, checked 2026-10-15)