The Met Office issues a yellow weather warning for snow in Wales for the weekend of 4–5 January.[7]
The mystery runner at the Nos Galan race is revealed as boxer Lauren Price.[8]
The Welsh Ambulance Service officially declares the end of a "critical incident" that began on 30 December.[9]
6 January – The UK bank accounts of Daniel Andreas San Diego, one of the United States' most wanted fugitives who was arrested in Wales after 21 years on the run, are frozen for 12 months following a hearing at Llandudno Magistrates' Court.[10]
Police are called to Newport High School after three teachers are attacked by what is reported to have been an ex-student.[12]
8 January – Proposals are published to give Members of the Senedd a 6% pay rise, taking the wages for a backbench MS to £76,380 in 2025–26, up from £72,057.[13]
9 January – James Howells loses his attempt to sue Newport Council to make them recover a Bitcoin hard drive that is now worth about £598m from a rubbish tip.[14]
Le Pub, a music venue in Newport which was threatened with closure, has been bought by a community enterprise, Music Venue Properties (MVP), which aims to protect live music locations.[16]
11 January – The death is reported of Leon Adams, who spent two years in a coma and was left paralysed and brain damaged following an attack in Cardiff on 14 February 2002.[17]
14 January – Welsh Conservative leader Darren Millar accuses Senedd Presiding OfficerElin Jones of "inappropriately interrupting him" after she tells him to "tone down" a question about grooming gangs while he called for a fresh inquiry into child sexual abuse.[18]
17 January – An estimated 40,000 homes remain without water following a burst water pipe at Dolgarrog, Conwy county. Welsh Water says that although the pipe has been repaired, a water supply will not be fully restored for "up to 48 hours".[21]
18 January – Welsh Water confirms that 40% of customers affected by a recent pipe burst have had their water restored, but some may have to wait until the next day for it to be fully restored.[22]
21 January – First Minister Eluned Morgan tells the Senedd she is lobbying the UK government to give the Welsh Government powers over the Crown Estate in Wales, after a UK government minister suggested otherwise.[23]
22 January – Following a trial at Cardiff Crown Court, Courtney Matthew is found guilty of throwing a cup of excrement at a prison officer while he was a prisoner at HMP Parc in Bridgend.[24]
Dylan Thomas, the grandson of Peter's Pies founder Stanley Thomas, is sentenced to life imprisonment for the murder of his friend William Bush, who he stabbed to death on 24 December 2023.[25]
First Minister Eluned Morgan warns Wales' health bosses they will not get extra funds for their services unless they cut waiting times.[26]
25 January – A group of seven students are rescued by lifeboat from Worm's Head on the Gower Peninsula after becoming trapped on the tidal island in stormy conditions.[27]
29 January – Andrew RT Davies, the former leader of the Welsh Conservatives, is warned by Senedd authorities he will face punishment for any future rule breaking after failing to declare his interest as a farmer when asking questions about inheritance tax for farms.[29]
3 February – A 14-year-old girl who stabbed two teachers and a student at Amman Valley School in Carmarthenshire is found guilty of attempted murder.[32]