The Southeast forms a band of fertile plains and low-lying coastlines between Dublin and Cork, crossed by three rivers: the Barrow, the Nore and the Suir, which converge in Waterford Estuary. It is Ireland's driest region, with roughly 1,000 mm of rainfall annually compared to 1,800 mm on the west coast. The Irish call it the Sunny South East—a phrase that captures both the climate and a certain agricultural, unhurried character, far removed from the Atlantic moisture of Connemara or Kerry.

The Boyne Valley, north of Dublin in County Meath, opens the journey with one of Europe's major archaeological sites. Newgrange, Knowth and Dowth are three Neolithic tumuli dated to around 3200 BC, predating the Pyramids of Giza. On the morning of the winter solstice, a shaft of sunlight penetrates the central chamber of Newgrange through an opening engineered for this purpose five thousand years ago. The Hill of Tara, a few kilometres away, was the political seat of the High Kings of Ireland until the twelfth century. This historical density extends to Trim, whose late twelfth-century Norman castle served as a filming location for Braveheart.

Further south, Kilkenny preserves the Butler Castle, an Anglo-Norman dynasty established there since 1391, and a fabric of medieval alleyways called slips that descend towards the Nore. The town hosts the Kilkenny Arts Festival every August and, in June, the Cat Laughs, a comedy festival drawing English-speaking comedians from around the world. Waterford, founded in 914 by Vikings under the name Vedrarfjordr, is Ireland's oldest city. Its Viking Triangle concentrates Reginald's Tower, Christ Church Cathedral and the Waterford Crystal museum of cut glass, a local industry relaunched after its 2009 collapse.

Wexford County, agricultural and market-garden focused, supplies a large share of the strawberries and potatoes sold in Dublin. Its flat coastline welcomes grey seals and, in winter, around 10,000 Greenland white-fronted geese that overwinter in Wexford Slobs reserve. Hook Head carries one of the world's oldest operational lighthouses, in service since the twelfth century on foundations likely even older. Further west, Cobh in County Cork was the Titanic's last port of call on 11 April 1912 and the departure point for more than 2.5 million Irish emigrants between 1848 and 1950. The Cobh Heritage Centre documents these departures with restraint.

Cork, the country's second city with roughly 220,000 inhabitants, deserves two full days. Its English Market, in operation since 1788 beneath its Victorian hall, sells drisheen (local blood sausage), spiced beef and farmhouse cheeses from West Cork such as Gubbeen and Durrus. The city's food scene rests on this agricultural belt: Ballymaloe House, in Shanagarry, has been the school training much of Ireland's contemporary chef community since the 1960s. West of Cork, the Mizen Head peninsula points towards the Atlantic, its 1909 semaphore perched on red sandstone cliffs.

The region is traversed via good national roads. Allow 2 hours 30 minutes from Dublin to Kilkenny, 1 hour 15 minutes from Kilkenny to Waterford, 2 hours from Waterford to Cork. Three to four days suffice to travel from Dublin to Cork covering the Boyne Valley, Kilkenny, Waterford and Cobh, provided you don't attempt to see everything.

To discover

Newgrange, the solstice tumulus. Stone passage of 19 metres constructed around 3200 BC, aligned with the winter solstice sunrise on 21 December. Guided tour from the Brú na Bóinne interpretation centre, with mandatory shuttle.

Medieval alleyways of Kilkenny. The Medieval Mile connects Saint Canice's Cathedral to the Butler Castle by following the Nore. The slips, narrow passages between houses, convey the scale of a fourteenth-century town preserved intact.

English Market in Cork. A hall from 1788 where West Cork cheeses, fish from Ballycotton and local specialities such as drisheen are sold. A good starting point for a gastronomic day towards Kinsale or Ballymaloe.

Cobh and the Titanic pier. The White Star Line boarding pontoon still stands, facing the neo-Gothic Saint Colman Cathedral. The Cobh Heritage Centre tells the story of nineteenth-century Irish emigration without sentimentality.

Hook Head Lighthouse. A 36-metre cylindrical tower built by monks in the twelfth century on the tip of County Wexford. Interior visit of three vaulted storeys and views over Waterford Estuary.

When to visit

The most favourable period extends from May to September. May and June are our preferred months for this region: long days (sunset around 9:45 pm mid-June), temperatures of 15 to 19°C, and less rain than the west. July and August remain good but Kilkenny and Cobh fill up, particularly during August festivals. September still offers 14 to 17°C and oblique light that serves the Boyne landscapes well.

Winter is not to be ruled out if you accept cold dampness. December brings around 7°C by day but it is the season for Greenland geese at Wexford and special lighting of the Newgrange tumulus around the solstice (lottery for the interior chamber, though the site remains visitable). January and February, wetter and windier on the Mizen coast, suit less. March and April are a transition season, cool (8 to 12°C) but little frequented.

Practical advice

Allow a minimum of three days for a serious Dublin, Boyne, Kilkenny, Waterford, Cork itinerary, and four to five days if you wish to include Cobh, Kinsale and the Mizen Head peninsula. The logical entry point is Dublin Airport to begin with the Boyne Valley, and Cork Airport to depart, avoiding backtracking. Distances are short (Dublin to Cork via Kilkenny and Waterford is roughly 350 km) but left-hand driving and secondary roads require some time allowance.

The Southeast pairs well with two follow-on journeys. For a first stay of 10 to 12 days, extend towards the Southwest and Kerry from Cork, passing through Killarney and the Ring of Kerry. For a longer trip, move on to the Cliffs of Moher and the Burren then Connemara and Galway. The region suits travellers who love dense history, contemporary Irish dining and cultivated rather than wild landscapes. Hotel comfort is good: converted manors in Wexford and Kilkenny, farmer B&Bs in West Cork, urban hotels in Cork and Waterford. Families with children, food-focused travellers and heritage enthusiasts will find their fit better than pure hikers.