Weather | 4–8°C (39–46°F), cold but softened by holiday lights and indoor buzz | 4–8°C (39–46°F), coldest-feeling month because of wind, rain, and short days | 5–7°C (41–45°F), still chilly, but days start stretching out |
Crowds | Moderate to high near Christmas and New Year | Low after January 2; moderate on TradFest weekends | Low to moderate, with spikes around rugby and film festival dates |
Atmosphere | Festive, busy, gift-shopping mode | Calm, pub-friendly, museum-heavy, more local | Slightly livelier, still off-peak, early-spring energy without spring weather |
Key events | Christmas markets, Wild Lights, New Year’s Festival | First Fortnight, BT Young Scientist Exhibition, TradFest Temple Bar | Lunar New Year events, Dublin International Film Festival, Six Nations rugby |
Public holidays | Christmas Day, St. Stephen’s Day | January 1 | St. Brigid’s Day bank holiday in early February 2026 |
Budget | Highest around December 20–31 | Best value from January 3 onward | Still good value except event weekends |
Best for | Holiday trips, couples, festive city breaks | Budget travelers, first-timers, whiskey fans, and indoor culture | Film lovers, rugby weekends, and a slightly fuller events calendar |
Book early? | Yes for holiday week, markets, and NYE | Only for New Year stays, TradFest, and small-group tours | Yes for DIFF dates, Six Nations weekends, and city-centre stays |
Transport tips | Holiday schedules and crowded shopping streets | Normal service returns quickly after January 1; dress for wet waits at bus stops | Match-day traffic near Aviva and busier airport weekends |