18 January – Incumbent Stefan Löfven returns to his role as prime minister after leading a caretaker government after the hung parliament of the 2018 elections. He is voted back in by the Riksdag after receiving votes from MPs of his own party and the Greens, while the Centre, Liberals, and Left Party abstain, with one Centre MP voting against. The Moderate Party, Christian Democrats and Sweden Democrats all vote against. The Löfven II Cabinet is formed.[1]
21 March – Ebba Busch announced that her Christian Democrats party was ready to start negotiations with the Sweden Democrats in the Riksdag, making her the first party leader to express a willingness to cooperate with the SD.[3]
4 May – Per Bolund is elected spokesperson of the Green Party, serving along Isabella Lövin who had served as co-spokesperson since 2016. Bolund replaced Gustav Fridolin
14 July – Eight parachutists and a pilot are killed when a GA8 Airvan crashes 5 kilometers southeast from Umeå on the island Storsandskär [sv] at the Ume River. The cause of the crash is found to be structural failure of a wing.[5]
8 August – The newspaper Metro ceases publication after financial difficulties.[6]
28 August – 16 year-old Swedish student Greta Thunberg arrives in New York Harbor after sailing across the Atlantic. Thunberg later testifies in front of the United States Congress on 18 September along with other climate activists. She later gives a speech at a UN summit on zero emissions.[7][8][9]
10 September – Ann Linde takes office as foreign minister after Margot Wallström announced her resignation on 6 September.[10]
December – the municipality of Skurup banned Islamic veils in educational institutions. Earlier the year, the municipality of Staffanstorp approved a similar ban.[14]