Ireland in January: Weather, Crowds & What to Expect
Climate Map for January
Average temperature across Ireland in January.
City Weather in January
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Dublin | 8° | 2° | 66 mm | low | Cold |
| Cork (city) | 9° | 4° | 128 mm | low | Cold |
| Limerick | 8° | 3° | 117 mm | low | Cold |
| Galway | 8° | 3° | 113 mm | low | Cold |
| Tallaght | 8° | 2° | 76 mm | low | Cold |
| Waterford | 8° | 3° | 104 mm | low | Cold |
| Swords, County Dublin | 8° | 2° | 71 mm | low | Cold |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Eastern & Dublin (Leinster and East Coast)
A grey, damp morning on Dublin Bay is typical in January, with temperatures usually hovering above freezing and overnight frost only occasional; snow happens but rarely lingers in the city. Coastal towns like Bray and Howth feel a sharp wind off the Irish Sea and walkers should bring a warm waterproof layer. Streets are quiet after the holiday season and many indoor attractions - the National Gallery, Guinness Storehouse - are comfortable refuges from drizzle.
The Midlands & Shannon Basin (Central Plains)
A still, misty start to January in the central lowlands often brings lingering fog over Lough Ree and peat bogs, while daytime temperatures commonly sit a few degrees above freezing. Snow is infrequent but when it does fall it can stick in sheltered hollows and slow rural lanes. Visitors touring Athlone Castle or the Shannon navigation will find quieter attractions and should pack layers and a warm hat for damp, chilly days.
Southwest (Cork, Kerry, Ring of Kerry, Dingle Peninsula)
January in the southwest can feel mild by Irish standards because of maritime moderation, but short days and frequent rain are common; higher passes like the Gap of Dunloe may get sleet. Killarney’s lakes and the Ring of Kerry look atmospheric in low light and the quieter tourist scene means better B&B availability. Bring a sturdy waterproof and be ready for sharp squalls if you plan coastal drives or sea-facing walks.
West Coast & Connemara / Galway / Clare (Aran Islands, Cliffs of Moher)
January on the west coast means strong Atlantic gales are possible and Galway wakes to bracing, wet mornings; higher ground in Connemara can carry intermittent snow or sleet. Coastal cliffs like the Cliffs of Moher feel raw in storms and ferry services to the Aran Islands are often suspended on rough seas. Travelers should plan flexible itineraries and use indoor days to explore Galway’s restaurants and galleries when the weather turns.
Northern & Northwest (Antrim Coast, Derry, Donegal)
January in the north and northwest can produce the coldest nights on the island; higher ground in Donegal and the Sperrins sometimes carry snow that lingers on shaded slopes. The Giant’s Causeway cliffs are striking under low winter light but feel raw in northerly winds; coastal roads may be affected by spray and icy patches. Travellers should pack thermal layers and expect that some rural attractions have reduced winter hours.