SeasonMapWhat's on in Cardiff, United Kingdom through the year
Cardiff, United Kingdom has 5 curated events through the year — 4 festivals and 1 seasonal opening. The ones to plan around: Tafwyl (June) and Six Nations match days (February). October to February are its peak-crowd months.
Updated September 2026 · every event curated and sourced · dates for 2026 where they are announced, the usual window where they are not
Cardiff events and crowds by month
January in Cardiff
Cardiff weather in January →Peak crowds — travelers describe it as peak season, Cardiff Winter Wonderland
Nothing new starts in January.
Still on: Cardiff Winter Wonderland (10 Nov – 5 Jan (usually))
February in Cardiff
Cardiff weather in February →Peak crowds — Six Nations match days, February half-term in United Kingdom
- Festival
Six Nations match days
1 Feb – 20 Mar · usuallyMajor festivalCrowdedBook earlyTwo or three home Saturdays put seventy thousand people inside the city walls and close the streets around the stadium from late morning. Rooms triple and the last trains out are a scrum. Source ↗
March in Cardiff
Cardiff weather in March →Busy — Six Nations match days, school holidays in 4 of the markets that fill it
Nothing new starts in March.
Still on: Six Nations match days (1 Feb – 20 Mar (usually))
April in Cardiff
Cardiff weather in April →Busy — Easter / spring holiday in United Kingdom, school holidays in 5 of the markets that fill it
Nothing new starts in April.
May in Cardiff
Cardiff weather in May →Busy — Late-May half-term in United Kingdom, school holidays in 3 of the markets that fill it
Nothing new starts in May.
June in Cardiff
Cardiff weather in June →Busy — Late-May half-term in United Kingdom, school holidays in 3 of the markets that fill it
- Festival
Tafwyl
15–25 Jun · usuallyMajor festivalA free weekend of Welsh-language music and food in the grounds of Cardiff Castle. You do not need a word of Welsh to enjoy it, and nobody will mind that you have none. Source ↗
July in Cardiff
Cardiff weather in July →Busy — Summer holidays in United Kingdom, school holidays in 6 of the markets that fill it
Nothing new starts in July.
August in Cardiff
Cardiff weather in August →Busy — Summer holidays in United Kingdom, school holidays in 6 of the markets that fill it
Nothing new starts in August.
September in Cardiff
Cardiff weather in September →Shoulder season — school holidays in 3 of the markets that fill it, an ordinary month
Nothing new starts in September.
October in Cardiff
Cardiff weather in October →Peak crowds — Cardiff Half Marathon, October half-term in United Kingdom
- Festival
Cardiff Half Marathon
1–12 Oct · usuallyMajor festivalCrowdedClosuresAround twenty thousand runners take the city centre, Roath Park and Cardiff Bay on an early October Sunday. Roads shut from dawn until early afternoon, so plan a car around it or leave it. Source ↗
November in Cardiff
Cardiff weather in November →Peak crowds — Autumn internationals, Cardiff Winter Wonderland
- Festival
Autumn internationals
1–30 Nov · usuallyMajor festivalCrowdedBook earlyWales host two or three November Tests at the Principality, with the same road closures and the same hotel prices as the spring. The roof goes on, so the weather is beside the point. Source ↗
- Opening
Cardiff Winter Wonderland
10 Nov – 5 Jan · usuallyChristmas & New YearCrowdedAn open-air rink, a big wheel and a beer hall take over the civic centre lawns from mid-November until after New Year, alongside the Christmas market in the pedestrian streets. Source ↗
December in Cardiff
Cardiff weather in December →Peak crowds — Cardiff Winter Wonderland, Christmas holidays in United Kingdom
Nothing new starts in December.
Still on: Cardiff Winter Wonderland (10 Nov – 5 Jan (usually))