What to know before travelling around Ireland

Who actually comes to Ireland

Just over 6.4 million foreign visitors completed a trip to Ireland in 2025, down 3% on the 6.6 million of 2024 and up 2% on 2023. They stayed 47.9 million nights, also down 3%, and spent an estimated 5.5 billion euros excluding fares, down 9% on the 6 billion of the previous year. The average stay was 7.5 nights, unchanged from 2024.

Those figures come from the Central Statistics Office passenger survey, which questions around 13,000 departing passengers a month at the country's ports and airports. Two exclusions are worth knowing: visits by residents of Northern Ireland are not counted, and neither are foreign visitors who leave through Northern Irish ports and airports, so the true traffic across the island is larger than the release describes.

Why the visitor mix changes the country

Only 40% of overnight foreign visitors in 2025 gave holidays, leisure and recreation as their main purpose. A further 35% came to visit friends and relatives, and 15% came for business.

That second figure is the diaspora, and it is the single most distinctive thing about Irish tourism. More than a third of foreign arrivals are not staying in hotels, are not visiting the marketed attractions, and are going wherever their relatives happen to live, which spreads visitor spending into towns no tourist board could ever have promoted.

The origin mix follows from the same history. Across 2025 Great Britain supplied 38% of visitors, continental Europe 33%, North America 24% and the rest of the world 5%. The average stay of 7.5 nights is long for a European destination, and it reflects how far most of those visitors have come and how many of them have a bed waiting.

What the monthly figures show

Annual totals hide how uneven the year is. December 2025 gives a useful sample: 524,100 foreign visitors completed a trip that month, 34% more than in December 2024, staying 4.8 million nights, an increase of 24%, and spending 427 million euros excluding fares, up 30%.

Two things in that month's data are worth pulling out. The average stay was 9.1 nights, longer than the annual average of 7.5, because December travel is disproportionately people visiting family rather than taking a holiday. And mean spending per visitor was 815 euros, down 3% on the previous December, which is the same pattern read from the other end: a visitor staying in a relative's house spends less per night than one in a hotel.

The passenger flow behind those numbers runs in both directions. In total 1,672,600 passengers departed Ireland on overseas routes in December 2025, and 59.4% of them were Irish residents heading out rather than visitors heading home. Ireland is a country whose population travels heavily, and the tourism balance has to be read with that in mind.

A further 9.2% of departures in December 2025 were same-day visitors, largely Northern Ireland residents. Cross-border movement is continuous, invisible in the headline tourism figures, and economically significant to the border counties on both sides.

What the weather does through the year

The Atlantic governs the Irish climate completely. The warm North Atlantic Drift keeps sea temperatures up, and the result is a country without the temperature extremes normal at its latitude, with the maritime influence strongest near the Atlantic coast and weakening inland.

The seasons are not the ones a continental visitor expects. Between February and June the influence of continental and Greenland anticyclones makes those the months of least rainfall, so spring is the driest part of the year. The sea is coldest in February and March, which keeps spring air temperatures rising slowly, though on clear days with light winds the afternoons can turn warm.

From late June or early July, pressure rises over the ocean and falls over Europe, the surface winds turn westerly, and air with a long ocean track arrives, increasing cloud, humidity and rainfall. In practice the high summer is often wetter and greyer than late spring. From late summer through autumn there is a small risk of former tropical depressions merging into the North Atlantic pattern to produce severe storms, which are rare and significant when they happen. Atlantic low-pressure systems are well established by December, moving rapidly east with strong winds and frontal rain.

The practical conclusion is that April to June is the best window, that July and August are the busiest months and not the driest, and that the correct approach to Irish weather in any month is to carry clothing for all of it. Days are also very long in June and very short in December, which matters more than temperature for what can be fitted into a day: midsummer gives usable light past ten at night on the west coast, and midwinter takes it away by four in the afternoon.

Where the scenery is

The west and south-west coasts hold most of what visitors come to see, and the six national parks are the framework for reaching it. Killarney in Kerry sits under the MacGillycuddy's Reeks, the country's highest range. Connemara in Galway and Wild Nephin in Mayo cover the Atlantic bog and mountain country, with Wild Nephin also a dark-sky reserve. Glenveagh in Donegal is built around Lough Veagh in the north-west. The Burren in Clare is a limestone pavement with a flora found nowhere else in Ireland, and Wicklow Mountains, the one park within reach of Dublin, contains the glacial valley and monastic site at Glendalough.

The two World Heritage properties sit outside that western belt. Brú na Bóinne, the archaeological ensemble of the bend of the Boyne, was inscribed in 1993 and lies about an hour north of Dublin. Sceilg Mhichíl, a monastic settlement on a rock eleven kilometres out into the Atlantic off Kerry, was inscribed in 1996, and landing there depends on boat availability and sea conditions and is limited by permit. The season is short, the crossing is rough often enough that sailings are cancelled at short notice, and anyone treating a landing as fixed in an itinerary should expect to be disappointed. Boats that circle the rock without landing run more reliably and show the site from the water.

Dublin is where almost everyone arrives and it holds the museums, the Georgian streets and the literary sites. Cork, Galway and Limerick are the other cities of any size, and Galway is the usual base for the western coast. A common shape for a first trip is three nights in Dublin, a train or drive west, and the remainder on the Atlantic seaboard, which fits the average stay recorded in 2025 almost exactly and is why the two ends of the country see most of the traffic while the midlands see very little.

How visitors arrive in Ireland and move on

Almost all arrivals come by air, and Dublin Airport handles the large majority. Passenger departures across the main airports and seaports rose by more than 207,000 in December 2025 alone, a 14% increase on the same month a year before, with the growth concentrated at Dublin.

Public transport between cities works and public transport within the countryside does not. Rail links Dublin to Belfast, Cork, Limerick, Galway, Waterford and Sligo, and intercity coaches fill much of the rest, but the network radiates from the capital and cross-country connections are slow. For the coasts, the parks and the small towns, a car is effectively necessary.

Driving is on the left, which is worth stating plainly because most visitors arrive from countries where it is not. The vehicle registration code is IRL. Motorways connect Dublin to the other cities and are tolled in places; the regional and local roads that lead to the scenery are narrow, often single track with passing places, and slower than a map suggests. Distances are short and travel times are not. The country is 69,797 square kilometres, small enough that any two points are within a day of each other, and the coastal routes that make the west worth visiting are precisely the ones that take three hours to cover eighty kilometres.

Where to eat and what to drink

Irish food has changed more in twenty-five years than in the two centuries before them, and the change came from the same place as the wealth. A country producing beef and dairy on grass now cooks with them rather than exporting them unnoticed, and the restaurant standard in Dublin, Cork and Galway is high and priced accordingly.

Outside the cities the pattern is different and better than its reputation. Seafood along the western and southern coasts is landed locally, and the small towns of Kerry, Clare, Galway and Donegal are where it is worth eating. The traditional repertoire, brown bread, chowder, bacon and cabbage, stew, is still cooked and no longer apologised for. Farmhouse cheese and craft brewing both grew out of the same decades, and both are now normal rather than novel, so a small town in west Cork or east Clare is likely to have at least one of each within a short drive.

The pub remains the social centre, particularly outside the cities, and the traditional pub with live music is a real institution as well as a marketed one. Session music happens on published nights in most towns of any size, and it is played for the players rather than staged, which is the difference between the version worth finding and the version in a guidebook.

One practical warning applies. Ireland enforces drink-driving limits strictly, rural public transport barely exists in the evenings, and the combination means a night in a country pub requires either a place to stay within walking distance or someone not drinking. That constraint has closed a great many rural pubs and it shapes how a visitor without a driver can spend an evening outside a town.

Why an Irish trip needs two currencies

The currency is the euro. Northern Ireland, an hour or two up the road from much of the country, uses pounds sterling, so a trip crossing the border needs both, and there are no border controls of any kind between the two jurisdictions.

The emergency number is 112, which works throughout the country and across the European Union. Ireland uses the British three-pin fitting at 230 volts, so continental European appliances need an adapter and British ones do not.

English is spoken universally. Irish is the first official language and appears on every road sign, ahead of the English name, and in the Gaeltacht districts along the western seaboard the signs are in Irish only, which is worth knowing before driving through Connemara or west Kerry with a map written in English. Ireland: culture takes up what the language status means, and Ireland: geography the coastline the visitors are there for.