Delhi features an atypical version of the humid subtropical climate . Summers are long and the weather is extremely hot from early April to mid-October, with the monsoon season in between. In early March, the wind direction changes from north-westerly to south-westerly. From March to May the weather is hot. The monsoon arrives at the end of June, along with an increase in humidity. The brief, mild winter starts in late November, peaks in January and heavy fog often occurs.
Temperatures in Delhi range from -2.2 to 48.5 °C (28 to 119.3 °F). The annual mean temperature is 25 °C (77 °F); monthly mean temperatures range from 13 to 32 °C (55 to 90 °F). The highest temperature recorded in July was 45 °C (113 °F) in 1931. The average annual rainfall is approximately 714 mm (28.1 in), most of which falls during the monsoon in July and August. The average date of the advent of monsoon winds in Delhi is 29 June
