1st » Sydney or Sydney, Australia, swelters in 45 ˚C (113 ˚F) heat, a record for the city.
13th » The Black Friday (1939) or Black Friday bush fires burn 20,000 square kilometers of land in Australia, claiming the lives of 71 people.
16th » The Irish Republican Army (1922–1969) known as Irish Republican Army (IRA) begins a S-Plan named bombing and sabotage campaign in England.
24th » The 1939 Chillán earthquake e.g deadliest earthquake in Chilean history strikes Chillán, killing approximately 28,000 people.
26th » Spanish Civil War Catalonia Offensive: Troops loyal to nationalist General Francisco Franco and aided by Kingdom of Italy named Italy take Barcelona.
27th » First flight of the Lockheed P-38 Lightning.