The diagram illustrates the monthly temperature and precipitation in Kolkata city on average within a year.
Overall, both the temperature and the rainfall show the highest figures in the middle of the year, from May to October.
Months in the beginning and end of the year, including January, February, November and December show the lowest average temperature (at around 20 to 25 Celcius degree), as well as the precipitation (at around 10 to 20mm). While the temperature increases significantly and reaches the peak of 32 Celcius degree in May, the rainfall rises more gradually in those 3 months (from March to May), gets the point of 100mm per month on May.
Jun witnesses the most outstanding rise in the precipitation when the figure is 2.5 as much as May (250mm compared to 100mm). The rainfall continues growing in volume and reaches the highest point of around 340mm per month in July while the temperature remains quite constant during those months. Both the temperature and rainfall decline from August to the end of the year, but the precipitation shows the more notable decrease, from 330mm in August to around 5mm in December.