In Enskede, south Stockholm, a man was stabbed in the leg late in the evening and a suspect was subsequently arrested on charges of attempted manslaughter. The man's injuries are understood not to be life-threatening according to the police.
In Norrköping, eastern Sweden, a man in his 20s was stabbed in the arm. Police were called out to an address, where there was a private party taking place, and have identified a potential suspect.
Down south in Oxie, in Malmö, there were reports of a major brawl involving weapons. One person was was taken to hospital by ambulance while two others were driven to A&E by the police.
Elsewhere in Skåne there were minor disturbances in Lund's city park where a large crowd had gathered for the festivities.
Police hauled 15 people into custody for drunken behaviour, one was arrested for aggravated assault while another was arrested for assault. Four were arrested for mugging and one for assaulting an official.
"Considering that more than 30,000 people gathered in such a small space, we would probably have anticipated more (trouble). We also confiscated a large amount of alcohol from young people, around 80 or so," Hans Nilsson of the Skåne police told the TT news agency.
The authorities were also kept busy with a number of alcohol seizures from underage drinkers. In Halmstad, western Sweden, police raided a garage after two 17-year-old individuals were apprehended for having illegal alcohol.
At the garage the police found 50 litres of vodka, 40 litres of wine and 60 cases of beer and cider. Two people are now suspected for having violated alcohol law.
In Gothenburg, 30 people were taken into custody for being drunk and disorderly.
In Värmland, western Sweden, the unseasonal cold weather was cited by police as the likely cause for an unusually quiet night.
"Nobody wants to be out in that so we are delighted with that,"Bjarne Andersson of the Värmland police told TT.
Meanwhile in Stockholm the night was described as relatively calm thanks to the rain.