Thousands of people are expected to see in May Morning together on Magdalen Bridge.
May Morning is a traditional celebration of the coming of Spring that has been taking place in Oxford for more than 500 years.
It will start at 6am on Monday 1 May with the choristers of Magdalen College choir singing the Hymnus Eucharisticus from the college’s Great Tower.
Hymnus Eucharisticus was composed in the 17th century by a Fellow of Magdalen College and has been sung every year from the Great Tower on May Morning ever since.
This will be followed by the Great Tower’s bells ringing out over the city for approximately 20 minutes.
Events and activities, including Morris Dancing and folk singing, will then take place across the city.
Last year’s event attracted about 25,000 people.
Peter McQuitty, Oxford City Council’s head of culture, said: “May Morning is one of the unique local traditions that make Oxford such a lovely place to live and work.
“People should be aware that large crowds are likely to be on Magdalen Bridge at 6am. Please look after yourself and those around you.”
Oxford City Council organises May Morning at Magdalen Bridge on behalf of partners, including Thames Valley Police, Oxfordshire Fire and Rescue Service, South Central Ambulance Service, Oxfordshire County Council and Magdalen College.
Events held at other venues and locations across the city are organised by the individual venues or groups.