The mixed chart illustarates the climate in Kolkata in terms of average temperatures and rainfall per month.
Overall, the temperatures are always high, with little fluctuation. It is also clear that the rainfall are basically in the range from June to September.
From January to May, the rainfall and the precipitation follow the same pattern of increasing, despite the polar rate. Starting at around 20, the temperature keeps growing at a relatively high pace till Apirl, before peaking in May when it reaches below 30 degree. The rainfall, however, firstly rises at a slow pace, but then doubles the last month in May, with the figure of about 100mm.
From June to December, the temperature remains plummeting. Despite its continuous decrease, it never falls below 20 degree even when it records the lowest in December. As for the rainfall, the precipitation surged to approximately 250mm in June, and maintains high until October when it falls down about 150mm, less than half of its peak of about 330mm in July. In November and December, the rainfall is rather little, especially in December, when it does not even reach 15mm.